An astronomical instrument for measuring angles, like the sextant or Hadley's quadrant, by the reflection of light from two plane mirrors which it carries, and differing from the sextant chiefly in having an entire circle.

A gallery in a theater, generally the one containing the prominent and more expensive seats.

A gallery in a theater, generally one containing inexpensive seats. / The social circle comprising one's family.

plural of full circle

Alternative form of go round in circles

Alternative form of go round in circles

plural of bouquet of circles

(mathematics, graph theory) A graph with only one vertex.

plural of wedge of circles

(graph theory) A graph with only one vertex.