Green’s Dictionary of Slang

twat n.

[? dial. twitchel, a narrow passage]

1. [mid-17C+] (also twat-hole, twatt, twattle, twit-twat, twoit, twot, twotch) the vagina; in pl., the labia [twit-twat is lit. abbr. SE twittle-twattle, idle talk].

2. [20C+] (also twot, twotface) a derog. term for a woman.

3. [1910s+] (also twatt, twot) a term of abuse, irrespective of gender.

4. attrib. use of sense 3.

5. [1950s+] (US) the buttocks.

6. [1970s+] (US gay) the anus.

7. [1980s+] something unpleasant, second-rate.

8. [2000s] (US black) used as a deliberately coarse substitute for SE what?

9. [2000s] a neutral term for a person.

In derivatives

twattishness (n.)

stupidity.

In compounds

twathead (n.) [-head sfx (1)]

1. [2000s] a general term of abuse.

2. in attrib. use of sense 1.

twathole (n.)

see sense 1 above.

twat-mag (n.)

[1990s+] a pornographic magazine.

twatman (n.) [play on the superhero Batman]

[1990s+] (UK juv.) a general term of abuse.

twat-masher (n.) [mash v. (1)]

[1900–20s] a pimp, a procurer.

twatmaster (n.)

[1990s+] a term of abuse or hostility.

twat-rug (n.)

[late 19C–1900s] a woman’s pubic hair.

twat-scourer/-scouring

see separate entries.

twat-swat (v.)

[2010s] (US) to interefere with the flirtation between two lesbian individuals.

In phrases

bag of smacked twats (n.)

[1990s+] a general derog. description of an unattractive woman.

go twat-faking (v.) (also go twat-raking) [fake v.1 (3)/rake v.1 (1)]

[1900s–20s] of a man, to have sexual intercourse.

go twatting (v.)

[1900s–20s] of a man, to have sexual intercourse.