brace of..., n. — Green’s Dictionary of Slang

brace of... n.

brace of broads (n.) [SE brace, a pair + broad shoulders]

(US black) one’s shoulders.

1941		D. Burley N.Y. Amsterdam News 7 June. 13: Them pulleys over my brace o’ broads will slay you dead.
1944		‘The Jiver’s Bible’ in D. Burley Orig. Hbk of Harlem Jive.

brace of hookers (n.) [SE brace + ext. of hook n.¹ (1a)]

(US black) one’s arms.

1943		D. Burley N.Y. Amsterdam News 18 Dept. 22: You lay down some action with the smoke-screen under your brace of hookers.
1944		D. Burley Orig. Hbk of Harlem Jive 47: They don’t come back once his brace of hookers have been put upon them!

brace of horned cows (n.)

(US black) a pair of aching feet.

1944

‘The Jiver’s Bible’ in D. Burley Orig. Hbk of Harlem Jive.

brace of shakes (n.)

brace of stops (n.)

(US black) the knees.

1947

D. Burley N.Y. Amsterdam News 15 Mar. 21: Last ink a splo copped his stop on his brace of drops and [...] unwound his spiel.