(military, aviation) A defensive combat tactic in which multiple aircraft form a horizontal circle in the air when attacked, so that the armament of each aircraft offers a measure of protection to the others.

plural of Lufbery circle

plural of doujin circle

(UK, law, informal) Collectively, the five most prestigious London-headquartered multinational law firms: Allen & Overy, Clifford Chance, Freshfields Bruckhaus Deringer, Linklaters, and Slaughter and May.

plural of squared circle

plural of math circle

(education) An informal space where people study and discuss mathematics, often involving games, hands-on activities, or competition.

A style of social dance done in a circle, semicircle or a curved line to musical accompaniment.

plural of circle dance

A route, taken by intercontinental aircraft for instance, which is the shortest distance between two destinations on the surface of the Earth; an arc of a great circle.