Definitions from Wiktionary ( )

▸ noun:  A circular frill or ruffle on a garment, especially a starched, fluted frill at the neck in Elizabethan and Jacobean England (1560s–1620s).
▸ noun:  Anything formed with plaits or flutings like a frill.
▸ noun:  Senses relating to animals.
▸ noun:  Philomachus pugnax (syn. Calidris pugnax), a gregarious, medium-sized wading bird of Eurasia; specifically, a male of the species which develops a distinctive ruff of feathers and ear tufts during mating season (the female is called a reeve).
▸ noun:  (ornithology) A set of lengthened or otherwise modified feathers on or around the neck of a bird.
▸ noun:  (zoology) A collar of lengthened or distinctively coloured fur on or around the neck of an animal.
▸ noun:  (engineering) A collar on a shaft or other piece to prevent endwise motion.
▸ noun:  (obsolete) An exhibition of haughtiness or pride.
▸ noun:  (obsolete) Tumultuous or wanton conduct or procedure.
▸ verb:  (transitive) To shape (fabric, etc.) into a ruff; to adorn (a garment, etc.) with a ruff.
▸ verb:  (transitive, falconry) Of a falcon, hawk, etc.: to hit (the prey) without fixing or grabbing hold of it.
▸ verb:  (rare, transitive) To ruffle; to disorder.
▸ verb:  (obsolete, transitive) Of a bird: to ruffle its feathers.
▸ verb:  (obsolete, transitive) To boast, to brag.
▸ verb:  (obsolete, intransitive) To speak in a loud and domineering manner; to bluster, to swagger.
▸ noun:  A fish of species Arripis georgianus, found in cool waters off the southern coast of Australia
▸ noun:  (obsolete) A bottom-dwelling carnivorous fish of the family Sparidae found in temperate and tropical waters; a porgy or sea bream.
▸ verb:  (ambitransitive) To play a trump card to a trick when unable to follow suit (that is, when unable to play a card of the same suit as the previous or leading card).
▸ verb:  (transitive) Especially in the form ruff out: to defeat (a card, etc.) by ruffing, thus establishing the master card in the suit led.
▸ noun:  An instance of ruffing, or an opportunity to ruff, when unable to follow suit.
▸ noun:  (obsolete) A game similar to whist and its predecessor.
▸ noun:  (music, often military) A low, vibrating beat of a drum, quieter than a roll; a ruffle.
▸ verb:  (transitive) To beat a ruff or ruffle, as on a drum.
▸ verb:  (intransitive) Of a drum, etc.: to have a ruff or ruffle beaten on it.
▸ noun:  Alternative spelling of ruffe: a small freshwater fish of the genus Gymnocephalus; specifically a Eurasian ruffe (Gymnocephalus cernua or Gymnocephalus cernuus) which has spiny fins; the pope. [Gymnocephalus cernua, a small Eurasian freshwater fish.]
▸ adjective:  (colloquial or obsolete) Alternative spelling of rough. [Not smooth; uneven.]

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