One of the fine hairs along an insect's wing.
An eyelash.
A short microscopic hairlike organelle projecting from a eukaryotic cell (such as a unicellular organism or one cell of a multicelled organism) which serve either for propulsion by causing currents in the surrounding fluid or as sensors.
Hairs or similar protrusions along the margin of an organ.
A set of lengthened or otherwise modified feathers on or around the neck of a bird.
A circular frill or ruffle on a garment, especially a starched, fluted frill at the neck in Elizabethan and Jacobean England (1560s–1620s).
Arripis georgianus, a fish found in cool waters off the southern coast of Australia; the Australian herring or tommy ruff.
An instance of ruffing, or an opportunity to ruff, when unable to follow suit.
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).
A collar on a shaft or other piece to prevent endwise motion.
A low, vibrating beat of a drum, quieter than a roll; a ruffle.
Anything formed with plaits or flutings like a frill.
A collar of lengthened or distinctively coloured fur on or around the neck of an animal.
The bark of a dog; arf, woof.
To beat a ruff or ruffle, as on a drum.
To shape (fabric, etc.) into a ruff; to adorn (a garment, etc.) with a ruff.
Especially in the form ruff out: to defeat (a card, etc.) by ruffing, thus establishing the master card in the suit led.
Of a drum, etc.: to have a ruff or ruffle beaten on it.
To ruffle; to disorder.
Of a falcon, hawk, etc.: to hit (the prey) without fixing or grabbing hold of it.
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).