| circle | | |
| n. (shape) | 1. circle | ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point.; "he calculated the circumference of the circle" |
| ~ circle of curvature, osculating circle | the circle that touches a curve (on the concave side) and whose radius is the radius of curvature. |
| ~ circlet | a small circle. |
| ~ equator | a circle dividing a sphere or other surface into two usually equal and symmetrical parts. |
| ~ arc | a continuous portion of a circle. |
| ~ ellipse, oval | a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it.; "the sums of the distances from the foci to any point on an ellipse is constant" |
| ~ epicycle | a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid. |
| n. (group) | 2. band, circle, lot, set | an unofficial association of people or groups.; "the smart set goes there"; "they were an angry lot" |
| ~ social group | people sharing some social relation. |
| ~ car pool | a small group of car drivers who arrange to take turns driving while the others are passengers. |
| ~ clique, coterie, ingroup, inner circle, camp, pack | an exclusive circle of people with a common purpose. |
| ~ cohort | a band of warriors (originally a unit of a Roman Legion). |
| ~ confederacy, conspiracy | a group of conspirators banded together to achieve some harmful or illegal purpose. |
| ~ four hundred | the exclusive social set of a city. |
| ~ horsey set, horsy set | a set of people sharing a devotion to horses and horseback riding and horse racing. |
| ~ jet set | a set of rich and fashionable people who travel widely for pleasure. |
| ~ party, company | a band of people associated temporarily in some activity.; "they organized a party to search for food"; "the company of cooks walked into the kitchen" |
| n. (shape) | 3. circle | something approximating the shape of a circle.; "the chairs were arranged in a circle" |
| ~ shape, form | the spatial arrangement of something as distinct from its substance.; "geometry is the mathematical science of shape" |
| n. (act) | 4. circle, circuit, lap | movement once around a course.; "he drove an extra lap just for insurance" |
| ~ locomotion, travel | self-propelled movement. |
| ~ pace lap | the first lap of a car race that prepares the cars for a fast start. |
| ~ lap of honour, victory lap | a lap by the winning person or team run to celebrate the victory. |
| n. (artifact) | 5. circle, rotary, roundabout, traffic circle | a road junction at which traffic streams circularly around a central island.; "the accident blocked all traffic at the rotary" |
| ~ junction | the place where two or more things come together. |
| ~ road, route | an open way (generally public) for travel or transportation. |
| n. (artifact) | 6. circle, forget me drug, mexican valium, r-2, roach, roofy, rope, rophy | street names for flunitrazepan. |
| ~ flunitrazepan, rohypnol | a depressant and tranquilizer (trade name Rohypnol) often used in the commission of sexual assault; legally available in Europe and Mexico and Colombia. |
| n. (artifact) | 7. circle, dress circle | a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra.; "they had excellent seats in the dress circle" |
| ~ seating, seating area, seating room, seats | an area that includes places where several people can sit.; "there is seating for 40 students in this classroom" |
| ~ theater, theatre, house | a building where theatrical performances or motion-picture shows can be presented.; "the house was full" |
| n. (artifact) | 8. circle, round | any circular or rotating mechanism.; "the machine punched out metal circles" |
| ~ disk, disc | a flat circular plate. |
| ~ rotating mechanism | a mechanism that rotates. |
| v. (motion) | 9. circle | travel around something.; "circle the globe" |
| ~ go, locomote, move, travel | change location; move, travel, or proceed, also metaphorically.; "How fast does your new car go?"; "We travelled from Rome to Naples by bus"; "The policemen went from door to door looking for the suspect"; "The soldiers moved towards the city in an attempt to take it before night fell"; "news travelled fast" |
| ~ circumambulate, walk around | walk around something. |
| ~ circumnavigate, compass | travel around, either by plane or ship.; "We compassed the earth" |
| ~ circle around, circle round, revolve around | move around in a circular motion.; "The Earth revolves around the Sun" |
| v. (motion) | 10. circle, circulate | move in circles. |
| ~ go, locomote, move, travel | change location; move, travel, or proceed, also metaphorically.; "How fast does your new car go?"; "We travelled from Rome to Naples by bus"; "The policemen went from door to door looking for the suspect"; "The soldiers moved towards the city in an attempt to take it before night fell"; "news travelled fast" |
| ~ orb, orbit, revolve | move in an orbit.; "The moon orbits around the Earth"; "The planets are orbiting the sun"; "electrons orbit the nucleus" |
| ~ troll | circulate, move around. |
| ~ loop | fly loops, perform a loop.; "the stunt pilot looped his plane" |
| ~ loop | move in loops.; "The bicycle looped around the tree" |
| v. (contact) | 11. circle, encircle | form a circle around.; "encircle the errors" |
| ~ shape, form | give shape or form to.; "shape the dough"; "form the young child's character" |
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