LATIN DICTIONARYLexicon Latīnum
English → Latin

“horn” in Latin

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

horn
PROPR., cornu. A little horn, corniculum: to butt with the horns, cornibus ferire, petere (†); against each other, cornibus inter se luctari (†): to threaten with one’s horns, cornua obvertere alicui, or tollere in aliquem (also, figuratively, of setting one’s self to oppose him): to give anybody a pair of horns, adulterare alicujus uxorem; cum alicujus uxore rem habere: to receive a pair of horns, *decipi uxoris adulterio: of horns, comeus: to turn to horn, cornescere (Plin).
By metonymy, what resembles a horn: (a) the horns of the moon, cornua lunae; (b) a drinking-horn, cornu; (c) wind instrument, cornu: buccina [Vid: TRUMPET]. To blow the horn, cornu or buccinam inflare.

Quick answer

What is the Latin word for horn?
The usual Latin words for “horn” are cornū̆, corniculum, petō; also cornēscō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.