gin, v.² — Green’s Dictionary of Slang

gin v.²

[the threshing action of a cotton gin]

1. (US black) to thrash, to beat; always as ginning n.

2. to fight, to scuffle.

1938		J.H. Warner ‘A Word List From Southeast Arkansas’ in AS XIII:1 5: The team ginned it last night.
1972		D. Claerbaut Black Jargon in White America 66: gin v. to fight; scuffle.

3. to engage in sexual intercourse.

1940		in Leadbitter & Slaven Blues Records 461: [title] Can’t You Roll Up and Gin?
a.1963		‘The Fall’ in D. Wepman et al. Life (1976) 84: Now my deadliest blow came when the whore / Took sick and couldn’t gin.