Green’s Dictionary of Slang

(US) a male gang member.

1991		L.A. Times (CA) 23 mar. B2/3: They had seen the guys with the guns and offered descriptions of two cars. They were ‘cholitos,’ the driver said. ‘Cholos’.
1997		E. Little Another Day in Paradise 124: Homeboy don’t do it for me. He’s too macho. Reminds me of all the cholitos back in the barrio.