Green’s Dictionary of Slang

(US black) crack cocaine.

1991		Compton’s Most Wanted ‘Raised in Compton’ 🎵 I’m sellin’ the cavi, and I’m checkin’ a grip.
2005		DJ Quik ‘Indiscretions In The Back of The Lim’ 🎵 I got a bad bitch from Cali that love to blow cavi.