cocabola, n. — Green’s Dictionary of Slang

cocabola n.

[Arawak kakabali, thence Sp. cocobolo/cocobola, the timber from any one of several species of tree of the Central American genus Dalbergia, or the tree itself, a dark hardwood]

(US) a black person.

1942		Pittsburgh Courier 10 Jan. 11: I don’t mind tellin’ you, brother, I am a scared coca-bola by then [HDAS].
1958		(con. 1950) E. Frankel Band of Brothers 61: ‘We called this cocabola.’ [...] ‘What’s a cocabola?’ [...] ‘Nigger.’.