Etymology: Middle English cercle, from Anglo-French, from Latin circulus, diminutive of circus circle, circus, from or akin to Greek krikos, kirkos ring; akin to Old English hring ring — more at ring
Date: 14th century
1 a:ring, halob: a closed plane curve every point of which is equidistant from a fixed point within the curve c: the plane surface bounded by such a curve 2archaic: the orbit of a celestial body 3: something in the form of a circle or section of a circle: as a:diademb: an instrument of astronomical observation the graduated limb of which consists of an entire circle c: a balcony or tier of seats in a theater d: a circle formed on the surface of a sphere by the intersection of a plane that passes through it <circle of latitude>e:rotary 2 4: an area of action or influence :realm 5 a:cycle, round<the wheel has come full circle>b: fallacious reasoning in which something to be demonstrated is covertly assumed 6: a group of persons sharing a common interest or revolving about a common center <the sewing circle of her church><family circle><the gossip of court circles> 7: a territorial or administrative division or district 8: a curving side street