Green’s Dictionary of Slang

horn n.2

[resemblance to an SE horn]

1. in sexual contexts.

(a) [late 16C+] the penis.

(b) [late 17C+] sexual excitement or lust.

(c) [late 18C+] an erection.

(d) [1960s] (US campus) a male sexual athlete.

2. [19C+] (US) a drink [SE horn, a form of drinking vessel].

3. [mid-19C+] the nose.

4. [1930s+] an ear; in phr. between the horns, in the centre of the forehead.

5. [1930s+] (orig. jazz) as a wind instrument.

(a) a trumpet.

(b) a trombone.

(c) any kind of wind instrument.

6. [1940s+] (US) a telephone; esp. in phr. on the horn; cite 2002 refers to a walkie-talkie.

In compounds

hornbag (n.) [sense 1b above + -bag sfx/bag n.1 (3); or SE bag, a receptacle for sense 1a above]

[1980s+] an attractive woman.

horn-colic (n.) [mid-18C–1950s]

1. an involuntary erection.

2. male sexual frustration.

horndog

see separate entries.

horn movie (n.)

[1950s+] a pornographic film.

horn parlor (n.)

a brothel.

horn-pill (n.)

[20C+] an aphrodisiac.

horn root (n.) [its supposed aphrodisiac qualities]

[2010s] celery.

horn smoker (n.)

[2000s] a fellator or fellatrix.

hornsmoking (n.)

[2000s] fellatio.

In phrases

blow your horn if you don’t sell fish

[1900s] (US) a phr. used after someone has blown their nose noisily.

on the horn

in a state of sexual excitement.

scrape one’s horns (v.) (also cut one’s horns) [1960s+] (US)

of a man, to engage in sexual activity, esp. after a period of abstinence.

smoke a horn (v.) [smoke v.3 ]

[2000s] to fellate.

SE in slang uses

In compounds

horn-thumb (n.) [the sheath of horn worn by a cutpurse to protect his thumb from the knife-blade]

[mid-16C–early 17C] a cutpurse.

In phrases

blow one’s horn (v.)

see separate entry.

get the horn to (v.)

[1970s] (US) to pressurize.

in a horn [? dial. in a horn, expression of incredulity]

[mid-19C+] (US) a general phr. of dismissal.

In exclamations