a projecting starched frill worn round the neck, characteristic of Elizabethan and Jacobean costume

an Elizabethan ruff

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

a ruff of long pointed feathers

my nape stirred like the ruff of a dog in a thunderstorm

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

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

declarer ruffed and then led a heart