1horn 
/ˈhoɚn/ noun
plural horns /ˈhoɚn/ noun 1 [count] a : one of the hard pointed parts that grows on the head of some animals (such as cattle, goats, or sheep)
b [count] : a hard pointed part that grows on the nose of a rhinoceros
c [noncount] : the hard material of which horns are made
▪ utensils made of horn 2 [count] : something that is shaped like a horn
▪ a saddle horn 3 [count] a : a brass musical instrument (such as a trumpet or trombone) — see also english horn, french horn
b : an instrument made from an animal's horn that is used for music or for producing loud signals 4 [count] : a device that makes a loud noise
▪ The driver in the car behind me blew/honked his horn. — see picture at car 5 the horn US slang : 1telephone
▪ When he heard there was trouble, he got on the horn to the police. [=he phoned the police]
b [count] : a hard pointed part that grows on the nose of a rhinoceros
c [noncount] : the hard material of which horns are made
▪ utensils made of horn
▪ a saddle horn
b : an instrument made from an animal's horn that is used for music or for producing loud signals
▪ The driver in the car behind me blew/honked his horn. — see picture at car
▪ When he heard there was trouble, he got on the horn to the police. [=he phoned the police]
blow your own horn or toot your own horn
US, informal : to talk about yourself or your achievements especially in a way that shows that you are proud or too proud
▪ We've had a very successful year, and I think we have a right to blow our own horn [=(Brit) blow our own trumpet] a little.
▪ We've had a very successful year, and I think we have a right to blow our own horn [=(Brit) blow our own trumpet] a little.
lock horns — see 2lock
on the horns of a dilemma
: in a situation in which you have to choose between things that are unpleasant or undesirable
pull in your horns also draw in your horns
: to begin to behave in a more careful way ; especially : to spend or invest money more carefully
▪ The bad economic news has caused many investors to pull in their horns.
▪ The bad economic news has caused many investors to pull in their horns.
take the bull by the horns — see 1bull
— horn·less /ˈhoɚnləs/ adjective
▪ a hornless animal
/ˈhoɚnləs/ adjective ▪ a hornless animal
