Each of the four days customarily regarded as starting a new quarter year, formerly established as a time for rents and other payments to be due, tenancies to begin and end, and various meetings and assemblies to be held.

(astronomy) The waxing lunar phase, from new moon to half way between new moon and full moon.

(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 %)

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

the waning lunar phase halfway between full moon and new moon.

Three of four equal parts (3/4, ¾, 0.75).

A crack in a horse's forefoot; a sand crack.

(electricity) Differing in phase by a quarter of a cycle; two-phase.

(Britain) a small triangular side window in a motor car

(nautical, obsolete) Hammock nettings along a ship's quarter rails.