English Reference

Word

horn

Phoneticshorn

US/ˈhɔɹn/

UK/hˈɔːn/

Definitions

01animal growth

A2 · Elementary Countable noun

n. a hard, pointed part that grows on the head of animals like cows, goats, or deer.

n. a permanent, typically paired, bony projection on the head of various mammals, consisting of a keratin sheath over a core of bone.

“The bull lowered its horns and began to charge across the field.”

“The rhinoceros is frequently targeted by poachers who seek to sell its horn on the black market for its supposed medicinal properties.”

Synonyms

02musical instrument

B1 · Intermediate Countable noun Music

n. a musical instrument made of metal that you play by blowing into it.

n. any of various brass wind instruments, specifically the French horn or, more generally, any brass instrument in a jazz or orchestral context.

“She plays the horn in the school orchestra every Tuesday.”

“The jazz ensemble featured a powerful horn section that provided a sharp contrast to the melodic piano solo.”

Synonyms

03car signal

A2 · Elementary Countable noun

n. the device on a vehicle that makes a loud noise to warn other people.

n. an acoustic signaling device on a motor vehicle used to warn others of the vehicle's approach or presence.

“The driver honked his horn because the car in front wasn't moving.”

“In many crowded cities, the constant blaring of car horns contributes significantly to the overall level of noise pollution.”

Synonyms

04the telephone

C1 · Advanced Countable noun Slang · Informal

n. a slang word for a telephone.

n. a slang term for a telephone, often used in the phrase 'on the horn'.

“I was on the horn with my boss for over an hour this morning.”

“He spent the entire afternoon on the horn trying to negotiate a better deal with the suppliers before the contract expired.”

Synonyms

05sexual arousal

C2 · Proficiency Uncountable noun Slang · Vulgar

n. a very informal and rude way to talk about a man being sexually excited.

n. a vulgar slang term referring to a penile erection.

“He made a crude joke about having a horn.”

“The film was criticized for its reliance on low-brow humor and constant references to the protagonist's horn.”

Synonyms

06land formation

B2 · Upper Intermediate Countable noun Geography

n. a piece of land that sticks out into the sea.

n. a peninsula or a curved, projecting tract of land.

“The ship sailed around the horn of the island to reach the harbor.”

“The Horn of Africa is a strategically significant region that oversees some of the world's busiest shipping lanes.”

07to honk

B2 · Upper Intermediate Dialect

v. to use the horn of a car to make a noise.

v. to sound a vehicle's horn; primarily used in specific regional dialects.

“Don't horn so loudly; you will wake up the neighbors.”

“The taxi driver continued to horn incessantly at the pedestrians who were blocking the narrow intersection.”

Synonyms

Collocations

Common phrases and expressions where native English speakers use the word “horn” in context.

Verb

01. honk the horn

“The driver honked the horn to alert the pedestrian who was stepping into the street.”

verb + noun

02. lock horns with

“The two politicians locked horns with each other during the heated debate over tax reforms.”

verb + noun + prep

03. sound the horn

“The captain sounded the horn as the massive cruise ship began to pull away from the dock.”

verb + noun

Adjective

04. curved horn

“The ram used its powerful curved horns to defend its territory against rivals.”

adj + noun

05. deafening horn

“A deafening horn from the nearby fog-bound vessel startled everyone on the pier.”

adj + noun

Noun

06. horn blast

“A sudden horn blast echoed through the valley, signaling the start of the hunt.”

noun + noun

07. pair of horns

“The museum displayed a magnificent pair of horns from an extinct species of giant elk.”

noun + of + noun

Usage

Often used metaphorically in the phrase 'to blow one's own horn' to mean boasting about achievements.

Real-World Examples

“In her Horn Concerto, the soloist is amplified by the orchestral horns who eventually surround the stage and the audience.”
The Guardian 19 Aug 2026
“Mark Edwards says he will now beep his horn in the evenings, as he cannot play his music.”
BBC News 14 Aug 2026

Word family

NOUN

Horn(C1)

Related words

Idioms

Domains

BotanyGeographyMilitaryNauticalSports

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Common
Level
C1 · AdvancedOxford
Updated

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