circle

How to sign: 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";

Categories: ellipse, oval

Within this category: circlet, circle of curvature, epicycle, equator

circle

How to sign: an unofficial association of people or groups
"the smart set goes there"; "they were an angry lot";

Similiar / Same: band, set, lot

Categories: social group

Within this category: car pool, clique, cohort, conspiracy, Four Hundred, horsy set, jet set, party

circle

How to sign: movement once around a course
"he drove an extra lap just for insurance";

Similiar / Same: lap, circuit

Categories: locomotion, travel

Within this category: pace lap, victory lap