Nouns

(n)frill, ruffan external body part consisting of feathers or hair about the neck of a bird or other animal
(n)choker, ruff, ruffle, neck ruffa high tight collar
(n)ruff, Philomachus pugnaxcommon Eurasian sandpiper; the male has an erectile neck ruff in breeding season
(n)ruff, trumping(card games) the act of taking a trick with a trump when unable to follow suit

Verbs

(v)trump, ruffplay a trump