plural of traffic circle

Used other than figuratively or idiomatically: see full, circle. / (geometry) An arc of 360 degrees. / A full turn back to the original direction or orientation.

Through a rotation or revolution that ends at the starting point. / (idiomatic) Through a cycle of transition, returning to where one started after gaining experience or exploring other things.

Synonym of fairy ring / A circular patch barren of vegetation, often encircled by a ring of stimulated grass growth, typically found in regions of arid grassland.

(mathematics, for any point on a curve) The circle that has the same tangent, and the same curvature at the point on the curve.

To draw a wagon train into a circle to allow the wagons to provide cover when under attack. / (idiomatic) To prepare to defend against an attack or criticism.

(idiomatic) The group comprising one's closest friends or associates. / Used other than figuratively or idiomatically: see inner, circle.

(vulgar, slang) A group of males masturbating ("jerking off") together (with or without interpersonal contact).

(vulgar, slang) to participate in a circle jerk

(engineering) A circle which serves as a reference or base for the measurement of other quantities.