1a hard permanent outgrowth, often curved and pointed, found in pairs on the heads of cattle, sheep, goats, giraffes, etc. and consisting of a core of bone encased in keratinized skin.
a woolly keratinized outgrowth, occurring singly or one behind another, on the snout of a rhinoceros.
a deer’s antler.
a horn-like projection on the head of another animal, e.g. a snail’s tentacle or the tuft of a horned owl.
(horns) archaic a pair of horns as an emblem of a cuckold.
[mass noun]West Indian marital infidelity:she took endless horn and pressure, but now she wants a divorce
2 [mass noun] the substance of which horns are composed:powdered rhino horn
[count noun] a receptacle made of horn, such as a drinking container or powder flask.
3a horn-shaped projection or object.
a sharp promontory or mountain peak.
(the Horn) Cape Horn.
an arm or branch of a river or bay.
each of the extremities of a crescent moon.
British vulgar slang an erect penis.
4a wind instrument, conical in shape or wound into a spiral, originally made from an animal horn (now typically brass) and played by lip vibration.
