plural of circular firing squad

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

A form of exercise involving a variety of different disciplines, each a few minutes long.

Alternative spelling of circuit breaker

A particular breathing technique: it involves inhaling via the nose while pushing air, that was stored in the cheeks, out through the lips, so allows for continuous playing of a wind instrument.

(geometry) Any circle in two families of circles such that every circle in the first family intersects every circle in the second family orthogonally and vice versa.

(idiomatic) never ever, not for any reason

(euphemistic) Poverty.

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.