Definition of horn verb from the Oxford Advanced American Dictionary

 

horn

 verb
verb
NAmE//hɔrn//
 
Verb Forms present simple I / you / we / they horn
 
he / she / it horns
 
past simple horned
 
-ing form horning
 
 
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Phrasal Verbshorn in (on somebody/something)
See the Oxford Advanced Learner's Dictionary entry: horn