of three fourths of the usual dimension / (of a portrait) with the subject turned slightly away from a frontal view

(rugby) A player positioned between the half-backs and the full-backs (properly a three-quarter back) / (only in singular) A fraction with three of four equal parts (=75 %)

(Canada, US, music) A musical note one beat long in 4/4 time.

A period of twenty-five years.

(US) A room with a toilet, but no shower or bathtub, and typically no sink; a water closet.

Less common spelling of three-quarters

(historical) A block on which the body of a condemned criminal was quartered.

plural of quarter-bloke

(vehicles) the small triangular-shaped side window on some vehicles.

(UK military slang, now rare) A quartermaster, or quartermaster sergeant.