cocola, n. — Green’s Dictionary of Slang

cocola n.

[? var. on cocabola n. or Southern US pron. co-cola = Coca-Cola, which is dark]

(US prison) a black person.

1961		W. Randle ‘Payola’ in AS XXXVI:2 109: Berrey and Van den Bark add chickola, cocola.
1995		S. Moore In The Cut 98: I have new words for the dictionary. [...] cocola, black person (Puerto Rican word).