| insect | | |
| n. (animal) | 1. insect | small air-breathing arthropod. |
| ~ arthropoda, phylum arthropoda | jointed-foot invertebrates: arachnids; crustaceans; insects; millipedes; centipedes. |
| ~ arthropod | invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin. |
| ~ clypeus | a shield-like plate on the front of an insect's head. |
| ~ wing | a movable organ for flying (one of a pair). |
| ~ ala | a wing of an insect. |
| ~ social insect | an insect that lives in a colony with other insects of the same species. |
| ~ ephemeral, ephemeron | anything short-lived, as an insect that lives only for a day in its winged form. |
| ~ holometabola, metabola | insects that undergo complete metamorphosis. |
| ~ defoliator | an insect that strips the leaves from plants. |
| ~ pollinator | an insect that carries pollen from one flower to another. |
| ~ gallfly | any of various insects that deposit their eggs in plants causing galls in which the larvae feed. |
| ~ mecopteran | any of various carnivorous insects of the order Mecoptera. |
| ~ collembolan, springtail | any of numerous minute wingless primitive insects possessing a special abdominal appendage that allows the characteristic nearly perpetual springing pattern; found in soil rich in organic debris or on the surface of snow or water. |
| ~ proturan, telsontail | any of several minute primitive wingless and eyeless insects having a cone-shaped head; inhabit damp soil or decaying organic matter. |
| ~ beetle | insect having biting mouthparts and front wings modified to form horny covers overlying the membranous rear wings. |
| ~ web spinner | any of a small order of slender typically tropical insects that nest in colonies in silken tunnels that they spin. |
| ~ louse, sucking louse | wingless usually flattened bloodsucking insect parasitic on warm-blooded animals. |
| ~ bird louse, biting louse, louse | wingless insect with mouth parts adapted for biting; mostly parasitic on birds. |
| ~ flea | any wingless bloodsucking parasitic insect noted for ability to leap. |
| ~ dipteran, dipteron, dipterous insect, two-winged insects | insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing. |
| ~ leaf-miner, leaf miner | any of various small moths or dipterous flies whose larvae burrow into and feed on leaf tissue especially of the family Gracilariidae. |
| ~ hymenopter, hymenopteran, hymenopteron, hymenopterous insect | insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing. |
| ~ worker | sterile member of a colony of social insects that forages for food and cares for the larvae. |
| ~ termite, white ant | whitish soft-bodied ant-like social insect that feeds on wood. |
| ~ orthopteran, orthopteron, orthopterous insect | any of various insects having leathery forewings and membranous hind wings and chewing mouthparts. |
| ~ phasmid, phasmid insect | large cylindrical or flattened mostly tropical insects with long strong legs that feed on plants; walking sticks and leaf insects. |
| ~ dictyopterous insect | cockroaches and mantids. |
| ~ bug | general term for any insect or similar creeping or crawling invertebrate. |
| ~ hemipteran, hemipteron, hemipterous insect, bug | insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis. |
| ~ heteropterous insect | true bugs: insects whose forewings are membranous but have leathery tips. |
| ~ homopteran, homopterous insect | insects having membranous forewings and hind wings. |
| ~ psocopterous insect | small soft-bodied insect with chewing mouthparts and either no wings or two pairs. |
| ~ ephemerid, ephemeropteran | short-lived insect. |
| ~ plecopteran, stone fly, stonefly | primitive winged insect with a flattened body; used as bait by fishermen; aquatic gilled larvae are carnivorous and live beneath stones. |
| ~ neuropteran, neuropteron, neuropterous insect | insect having biting mouthparts and four large membranous wings with netlike veins. |
| ~ odonate | large primitive predatory aquatic insect having two pairs of membranous wings. |
| ~ trichopteran, trichopteron, trichopterous insect | caddis fly. |
| ~ thysanuran insect, thysanuron | primitive wingless insects: bristletail. |
| ~ thysanopter, thysanopteron, thysanopterous insect | an insect of the order Thysanoptera. |
| ~ earwig | any of numerous insects of the order Dermaptera having elongate bodies and slender many-jointed antennae and a pair of large pincers at the rear of the abdomen. |
| ~ lepidopteran, lepidopteron, lepidopterous insect | insect that in the adult state has four wings more or less covered with tiny scales. |
| ~ pupa | an insect in the inactive stage of development (when it is not feeding) intermediate between larva and adult. |
| ~ imago | an adult insect produced after metamorphosis. |
| ~ queen | the only fertile female in a colony of social insects such as bees and ants and termites; its function is to lay eggs. |
| ~ air sac | any of the thin-walled extensions of the tracheae of insects. |
| ~ thorax | part of an insect's body that bears the wings and legs. |
| ~ mentum | a projection below the mouth of certain mollusks that resembles a chin. |
| ~ swarm, cloud | a group of many things in the air or on the ground.; "a swarm of insects obscured the light"; "clouds of blossoms"; "it discharged a cloud of spores" |
| ~ holometabolism, holometaboly | complete metamorphosis in insects. |
| n. (person) | 2. dirt ball, insect, louse, worm | a person who has a nasty or unethical character undeserving of respect. |
| ~ disagreeable person, unpleasant person | a person who is not pleasant or agreeable. |
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