(music) a woodwind instrument similar to an oboe, but larger and pitched a fifth lower

A drinking-vessel made from the horn of an animal.

The cornucopia. / An edible chanterelle, Craterellus cornucopioides.

(nautical) a horn on a floating mine which, upon contact, releases an electrolyte that makes an electrical connection and initiates the explosion

Anhima cornuta, a South American bird, member of the family Anhimidae, with black upper parts, head and breast and white speckles on the crown, throat and wing coverts.

(idiomatic) To come into conflict.

plural of war-horn

plural of war horn

(mineralogy) A weathered form of chlorargyrite

(chiefly historical) A blowing horn blown (especially by Vikings and other Germanic peoples) to warn others of an impending battle, and call them to it, or to signal its commencement.