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.

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

(music) A group of four musicians who sing barbershop music. Usually contains high and lead tenors, baritone and bass.

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 %)

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

A wooden staff of an approximate length between 2 and 2.5 meters, sometimes tipped with iron, used as a weapon in rural England during the Early Modern period.

A quarterly payment or allowance, tax, pension, or wage paid or received. / The provision of quarters (as for troops), or the cost of it.

A belt connecting pulleys whose axles are at right angles; a quarter turn belt.