circle

(noun) 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. Examples: "He calculated the circumference of the circle."

(noun) an unofficial association of people or groups. Synonyms: set, band, lot. Examples: "The smart set goes there." "They were an angry lot."

(noun) something approximating the shape of a circle. Examples: "The chairs were arranged in a circle."

(noun) movement once around a course. Synonyms: lap, circuit. Examples: "He drove an extra lap just for insurance."

(noun) a road junction at which traffic streams circularly around a central island. Synonyms: traffic circle, rotary, roundabout. Examples: "The accident blocked all traffic at the rotary."

(noun) street names for flunitrazepan. Synonyms: R-2, Mexican valium, rophy, rope, roofy, roach, forget me drug.

(noun) a curved section or tier of seats in a hall or theater or opera house; usually the first tier above the orchestra. Synonyms: dress circle. Examples: "They had excellent seats in the dress circle."

(noun) any circular or rotating mechanism. Synonyms: round. Examples: "The machine punched out metal circles."

(verb) travel around something. Examples: "Circle the globe."

(verb) move in circles. Synonyms: circulate.

(verb) form a circle around. Synonyms: encircle. Examples: "Encircle the errors."