Green’s Dictionary of Slang

1. a carnival geek [like the dog the geek bites (in his case chickens’s heads)].

1914

Ade ‘The New Fable of The Toilsome Ascent’ in Ade’s Fables 183: As for Wall Street and the Plunder-bund, when he got after them, he was a raving Bosco. A regular Woof-Woofer and bite their heads off].

2. a dog.

1993

I. Welsh Trainspotting 178: There’s the woof-woof trailing loyally behind. Pit Bull, shit bull, bullshit terrier.

3. a sexual partner; sexual intercourse.

2021		J. Ellroy Widespread Panic 56: Tell him to be discreet and order in his woof-woof.
2021		J. Ellroy Widespread Panic 100: ‘Your wife mentioned that you’re hung like an amoeba. That’s why she brings me all the woof-woof’.

4. the vagina, the female genitals.

2023

(con. 1962) J. Ellroy Enchanters 159: Stewardesses displayed their woof-woof. Full beaveroo, attached pubic hair.