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

cack v.²

[mid-16C+ SE cackle, to brag about a petty achievement]

1. to fall asleep.

1890		Sporting Times 8 Feb. 6/2: This is the last fare I’m going to take ’ome cacked.
1959		Newport Jazz Festival: 1959 45: cack: fall asleep, fall out, go under.

2. (US black) to boast, to brag, esp. of one’s good fortune.

1994

3. (US) to amaze.

1961

H. Ellison Rockabilly (1963) 48: Take it slow, kid. You’re going to cack-’em-out completely tonight.

cack-broad (n.) (also cackle-broad) [broad n.² (3)]

(US black) a woman who flaunts her wealth, esp. a nouveau riche woman.

1942		Z.N. Hurston ‘Story in Harlem Sl.’ in Novels and Stories (1995) 1004: Me, I knocks de pad with them cack-broads up on Sugar Hill, and fills ’em full of melody.
1960, 1975		Wentworth & Flexner DAS 84/1: cackle-broad cack-broad n. A fashionable, wealthy, or society woman.