Definitions:
a projecting starched frill worn round the neck, characteristic of elizabethan and jacobean costume

a projecting or conspicuously coloured ring of feathers or hair round the neck of a bird or mammal

a pigeon of a domestic breed with a ruff of feathers on its neck.

a north eurasian wading bird, the male of which has a large variously coloured ruff and ear tufts in the breeding season, used in display.

an edible marine fish of australian inshore waters that is related to the australian salmon.

(in bridge, whist, and similar card games) play a trump in a trick which was led in a different suit

an act of ruffing or opportunity to ruff

one of the basic patterns (rudiments) of drumming, consisting of a single note preceded by either two grace notes played with the other stick (double-stroke ruff or drag) or three grace notes played with alternating sticks (four-stroke ruff).