Green’s Dictionary of Slang

hambone n.3

1. (US) in pl., the knees.

[US] in J. London Letters (1966) 275: I have to get down on my hambones and beg forgiveness.
[US] in DARE.

2. (US black) the penis.

[US]Peg Leg Howell ‘Tishamingo Blues’ 🎵 I’m going to Tishamingo to have my hambone boiled, / These Atlanta women done let my hambone spoil.
[US]Z.N. Hurston Mules and Men (1995) 135: If Joe Willard try to take dese few fishes he done caught where he shacked up last night, Ah’m gointer take my Tampa switch-blade knife, and Ah’m goin’ ’round de hambone lookin’ for meat.
[US]J.L. Dillard Lex. Black Eng. 33: Hambone, very frequent in the older blues, may easily be understood by a modern listener.

3. (US black) the vagina.

[US]Cleo Gibson & Her Hot Three 🎵 I’m going to Washington / To get my hambone boiled, / ’cause these men in Atlanta / Bound to let my hambone spoil.