horn Definition in the Cambridge English Dictionary
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Definition of “horn” - English Dictionary

Definition of "horn" - American English Dictionary

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hornnoun

 us   /hɔrn/

horn noun (ANIMAL)

[C/U] a hard, ​pointedpart, usually one of a ​pair, on the ​head of ​cows, ​goats, and other ​animals

horn noun (MUSIC)

[C/U] any of ​variousmusicalinstruments consisting of a ​longcurvedmetaltube that is ​narrow at the end you ​blow into and ​wider at the other end, or this ​type of ​instrumentgenerally

horn noun (VEHICLE)

[C] a ​device on a ​vehicle that is used to make a ​loudsound as a ​warning or ​signal: Angry ​drivers were ​honkingtheir horns.
(Definition of horn from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "horn" - British English Dictionary

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hornnoun

uk   /hɔːn/  us   /hɔːrn/

horn noun (ANIMAL)

C1 [C or U] a hard, ​pointed, often ​curvedpart that ​grows from the ​top of the ​head of some ​animals, or the hard ​substance of which a horn is made
More examples

horn noun (VEHICLE)

B2 [C] a ​device on a ​vehicle that is used to make a ​loudnoise as a ​warning or ​signal to other ​people: The ​driver blew/​sounded (informal honked) her horn.
See also

horn noun (MUSIC)

C2 [C] a ​curvedmetalmusicalinstrument that is ​narrow at the end you ​blow into and much ​wider at the other end
(Definition of horn from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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