| yellowfin tuna | | |
| n. (animal) | 1. thunnus albacares, yellowfin, yellowfin tuna | may reach 400 pounds; worldwide in tropics. |
| ~ genus thunnus, thunnus | tunas: warm-blooded fishes. |
| ~ tunny, tuna | any very large marine food and game fish of the genus Thunnus; related to mackerel; chiefly of warm waters. |
| epidermis | | |
| n. (body) | 1. cuticle, epidermis | the outer layer of the skin covering the exterior body surface of vertebrates. |
| ~ cutis, skin, tegument | a natural protective body covering and site of the sense of touch.; "your skin is the largest organ of your body" |
| ~ epidermal cell | any of the cells making up the epidermis. |
| ~ corneum, horny layer, stratum corneum | the outermost layer of the epidermis consisting of dead cells that slough off. |
| ~ stratum lucidum | the layer of epidermis immediately under the stratum corneum in the skin of the palms and soles. |
| ~ stratum granulosum | the layer of epidermis just under the stratum corneum or (on the palms and soles) just under the stratum lucidum; contains cells (with visible granules) that die and move to the surface. |
| ~ malpighian layer, rete malpighii, stratum basale, stratum germinativum | the innermost layer of the epidermis. |
| ~ pallium, mantle | (zoology) a protective layer of epidermis in mollusks or brachiopods that secretes a substance forming the shell. |
| ~ stratum | one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock). |
| leather | | |
| n. (substance) | 1. leather | an animal skin made smooth and flexible by removing the hair and then tanning. |
| ~ piece of leather | a separate part consisting of leather. |
| ~ animal skin | the outer covering of an animal. |
| ~ grain | the side of leather from which the hair has been removed. |
| ~ alligator | leather made from alligator's hide. |
| ~ buckskin | a soft yellowish suede leather originally from deerskin but now usually from sheepskin. |
| ~ buff | a soft thick undyed leather from the skins of e.g. buffalo or oxen. |
| ~ ooze leather | a very soft leather made from the skins of calves and having a suede finish on the flesh side. |
| ~ russia leather | a smooth leather tanned with willow, birch, or oak, and scented on the flesh side with birch oil. |
| ~ calfskin, calf | fine leather from the skin of a calf. |
| ~ whit leather, white leather | a leather that has been treated with alum and/or salt. |
| ~ chammy, chammy leather, chamois, chamois leather, shammy, shammy leather | a soft suede leather formerly from the skin of the chamois antelope but now from sheepskin. |
| ~ cordovan | a fine leather originally made in Cordoba, Spain. |
| ~ cowhide, cowskin | leather made from the hide of a cow. |
| ~ crush, crushed leather | leather that has had its grain pattern accentuated. |
| ~ deerskin | leather from the hide of a deer. |
| ~ doeskin | soft leather from deerskin or lambskin. |
| ~ glove leather | leather suitable for making gloves. |
| ~ horsehide | leather from the hide of a horse. |
| ~ kidskin, kid | soft smooth leather from the hide of a young goat.; "kid gloves" |
| ~ mocha | soft suede glove leather from goatskin. |
| ~ morocco | a soft pebble-grained leather made from goatskin; used for shoes and book bindings etc.. |
| ~ patent leather | leather with a hard glossy surface. |
| ~ pigskin | leather from the skin of swine. |
| ~ sheepskin, fleece | tanned skin of a sheep with the fleece left on; used for clothing. |
| ~ shoe leather | leather used to make shoes. |
| ~ suede, suede leather | leather with a napped surface. |
| ~ roan | a soft sheepskin leather that is colored and finished to resemble morocco; used in bookbinding. |
| v. (contact) | 2. leather | whip with a leather strap. |
| ~ flog, lash, lather, trounce, welt, whip, slash, strap | beat severely with a whip or rod.; "The teacher often flogged the students"; "The children were severely trounced" |
| membrane | | |
| n. (artifact) | 1. membrane | a thin pliable sheet of material. |
| ~ drumhead, head | a membrane that is stretched taut over a drum. |
| ~ gel, gelatin | a thin translucent membrane used over stage lights for color effects. |
| ~ flat solid, sheet | a flat artifact that is thin relative to its length and width. |
| n. (body) | 2. membrane, tissue layer | a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants. |
| ~ trophoblast | the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall.; "after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta" |
| ~ chorioallantoic membrane, chorioallantois | the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois. |
| ~ web | membrane connecting the toes of some aquatic birds and mammals. |
| ~ bowman's capsule, capsula glomeruli, glomerular capsule | thin double membrane surrounding the glomerulus of a nephron. |
| ~ animal tissue | the tissue in the bodies of animals. |
| ~ axolemma | outer membrane covering an axon. |
| ~ basilar membrane | a membrane in the cochlea that supports the organ of Corti. |
| ~ fetal membrane | any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus. |
| ~ choroid, choroid coat | a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye. |
| ~ ciliary body | the part of the tunic of the eye between the choroid coat and the iris.; "the ciliary body produces aqueous humor" |
| ~ cornea | the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera. |
| ~ diaphragm, midriff | (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration. |
| ~ eardrum, myringa, tympanic membrane, tympanum | the membrane in the ear that vibrates to sound. |
| ~ endocranium | membrane lining the inside of the skull. |
| ~ endosteum | vascular membrane that lines the inner surface of long bones. |
| ~ ependyma | thin epithelial membrane lining the ventricles of the brain and the spinal cord canal. |
| ~ fertilization membrane | the membrane that forms around a fertilized ovum and prevents penetration by additional spermatozoon. |
| ~ hyaloid, hyaloid membrane | the transparent membrane enveloping the vitreous humor of the eye and separating it from the retina. |
| ~ intima | the innermost membrane of an organ (especially the inner lining of an artery or vein or lymphatic vessel). |
| ~ iris | muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eye. |
| ~ lamella | a thin membrane that is one of the calcified layers that form bones. |
| ~ meninges, meninx | a membrane (one of 3) that envelops the brain and spinal cord. |
| ~ mucosa, mucous membrane | mucus-secreting membrane lining all body cavities or passages that communicate with the exterior. |
| ~ periosteum | a dense fibrous membrane covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles; contains nerves and blood vessels that nourish the enclosed bone. |
| ~ perithelium | tissue layer around small blood vessels. |
| ~ retina | the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve. |
| ~ sarcolemma | an extensible membrane enclosing the contractile substance of a muscle fiber. |
| ~ semipermeable membrane | a membrane (as a cell membrane) that allows some molecules to pass through but not others. |
| ~ serosa, serous membrane | a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid. |
| ~ synovial membrane, synovium | a thin membrane in synovial (freely moving) joints that lines the joint capsule and secretes synovial fluid. |
| ~ adventitia, tunic, tunica | an enveloping or covering membrane or layer of body tissue. |
| ~ phospholipid | any of various compounds composed of fatty acids and phosphoric acid and a nitrogenous base; an important constituent of membranes. |
| peel | | |
| n. (person) | 1. peel, robert peel, sir robert peel | British politician (1788-1850). |
| ~ pol, political leader, politico, politician | a person active in party politics. |
| n. (food) | 2. peel, skin | the rind of a fruit or vegetable. |
| ~ rind | the natural outer covering of food (usually removed before eating). |
| ~ edible fruit | edible reproductive body of a seed plant especially one having sweet flesh. |
| ~ jacket | the outer skin of a potato. |
| ~ banana peel, banana skin | the skin of a banana (especially when it is stripped off and discarded).; "he slipped on a banana skin and almost fell" |
| ~ lemon peel, lemon rind | the rind of a lemon. |
| ~ orange peel, orange rind | the rind of an orange. |
| v. (contact) | 3. pare, peel, skin | strip the skin off.; "pare apples" |
| ~ peel off | peel off the outer layer of something. |
| ~ strip | remove the surface from.; "strip wood" |
| ~ flay | strip the skin off. |
| v. (contact) | 4. flake, flake off, peel, peel off | come off in flakes or thin small pieces.; "The paint in my house is peeling off" |
| ~ chip, chip off, break away, break off, come off | break off (a piece from a whole).; "Her tooth chipped" |
| v. (body) | 5. discase, disrobe, peel, strip, strip down, uncase, unclothe, undress | get undressed.; "please don't undress in front of everybody!"; "She strips in front of strangers every night for a living" |
| ~ take off | remove clothes.; "take off your shirt--it's very hot in here" |
| ~ undress, disinvest, divest, strip | remove (someone's or one's own) clothes.; "The nurse quickly undressed the accident victim"; "She divested herself of her outdoor clothes"; "He disinvested himself of his garments" |
| ~ take off | take away or remove.; "Take that weight off me!" |
| skin | | |
| n. (body) | 1. cutis, skin, tegument | a natural protective body covering and site of the sense of touch.; "your skin is the largest organ of your body" |
| ~ investment | outer layer or covering of an organ or part or organism. |
| ~ thick skin | skin that is very thick (as an elephant or rhinoceros). |
| ~ body covering | any covering for the body or a body part. |
| ~ pressure point | an area on the skin that is highly sensitive to pressure.; "you must know the pressure points in order to administer shiatsu" |
| ~ skin graft | a piece of skin taken from a donor area and surgically grafted at the site of an injury or burn. |
| ~ buff | bare skin; naked.; "swimming in the buff" |
| ~ dewlap | a hanging fold of loose skin on an elderly person's neck. |
| ~ epidermis, cuticle | the outer layer of the skin covering the exterior body surface of vertebrates. |
| ~ skin cell | any of the cells making up the skin. |
| ~ corium, derma, dermis | the deep vascular inner layer of the skin. |
| ~ macule, macula | a patch of skin that is discolored but not usually elevated; caused by various diseases. |
| ~ freckle, lentigo | a small brownish spot (of the pigment melanin) on the skin. |
| ~ liver spot | a type of skin disease that causes brown spots on the skin. |
| ~ milium, whitehead | a small whitish lump in the skin due to a clogged sebaceous gland. |
| ~ blackhead, comedo | a black-tipped plug clogging a pore of the skin. |
| ~ pore | any small opening in the skin or outer surface of an animal. |
| ~ scab | the crustlike surface of a healing skin lesion. |
| ~ connective tissue | tissue of mesodermal origin consisting of e.g. collagen fibroblasts and fatty cells; supports organs and fills spaces between them and forms tendons and ligaments. |
| ~ sudoriferous gland, sweat gland | any of the glands in the skin that secrete perspiration. |
| ~ integumentary system | the skin and its appendages. |
| ~ free nerve ending | microscopic sensory nerve endings in the skin that are not connected to any specific sensory receptor. |
| ~ pacinian corpuscle | a specialized bulblike nerve ending located in the subcutaneous tissue of the skin; occurs abundantly in the skin of palms and soles and joints and genitals. |
| ~ foreskin, prepuce | a fold of skin covering the tip of the penis. |
| ~ foreskin, prepuce | a fold of skin covering the tip of the clitoris. |
| ~ scalp | the skin that covers the top of the head.; "they wanted to take his scalp as a trophy" |
| ~ cuticle | the dead skin at the base of a fingernail or toenail. |
| ~ agnail, hangnail | a loose narrow strip of skin near the base of a fingernail; tearing it produces a painful sore that is easily infected. |
| ~ crinkle, wrinkle, crease, furrow, seam, line | a slight depression in the smoothness of a surface.; "his face has many lines"; "ironing gets rid of most wrinkles" |
| ~ melanin | insoluble pigments that account for the color of e.g. skin and scales and feathers. |
| n. (artifact) | 2. skin | an outer surface (usually thin).; "the skin of an airplane" |
| ~ aircraft | a vehicle that can fly. |
| ~ surface | the outer boundary of an artifact or a material layer constituting or resembling such a boundary.; "there is a special cleaner for these surfaces"; "the cloth had a pattern of red dots on a white surface" |
| n. (animal) | 3. hide, pelt, skin | body covering of a living animal. |
| ~ body covering | any covering for the body or a body part. |
| n. (state) | 4. skin | a person's skin regarded as their life.; "he tried to save his skin" |
| ~ aliveness, animation, living, life | the condition of living or the state of being alive.; "while there's life there's hope"; "life depends on many chemical and physical processes" |
| n. (artifact) | 5. skin | a bag serving as a container for liquids; it is made from the hide of an animal. |
| ~ bag | a flexible container with a single opening.; "he stuffed his laundry into a large bag" |
| ~ water skin, waterskin | a container of skin for holding water. |
| ~ wineskin | an animal skin (usually a goatskin) that forms a bag and is used to hold and dispense wine. |
| v. (motion) | 6. clamber, scramble, shin, shinny, skin, sputter, struggle | climb awkwardly, as if by scrambling. |
| ~ climb | move with difficulty, by grasping. |
| v. (contact) | 7. scrape, skin | bruise, cut, or injure the skin or the surface of.; "The boy skinned his knee when he fell" |
| ~ injure, wound | cause injuries or bodily harm to. |
| v. (contact) | 8. bark, skin | remove the bark of a tree. |
| ~ strip | remove the surface from.; "strip wood" |
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