Green’s Dictionary of Slang

1. sexual intercourse.

1980		(con. 1940s–60s) H. Huncke ‘Sea Voyage’ in Eve. Sun Turned Crimson (1998) 142: The other had eyes for Phil and had been wooing him [...] and beseeching him to have a ball.
1989		J. Morton Lowspeak.

2. one who has or offers sexual intercourse.

1971		E. Wilson Show Business Nobody Knows 400: ‘Mr. Wilson, I’m a super groupie! I’m the best ball in town’.
1979		E. Torres After Hours 192: A dude gotta be, the three gees [...] Good lookin’, good ball, and good rap.

3. an orgasm.

1974

N. Heard Cold Fire Burning 19: I waited till she had come and come and come, then I eased out my piece of flab and lay beside her pretending that I’d had a natural ball.