Green’s Dictionary of Slang

(US black) a drunkard.

1938		‘Sl. among Nebraska Negroes’ in AS XIII:4 Dec. 316/2: A habitual drunkard is a jickhead, a term not entered so far as I know in slang glossaries.
1941		M. Prenner ‘Drunk in Sl.’ in AS XVI:1 Jan. 70/2: drunken person [...] jickhead.
1947		M.H. Boulware Jive and Sl. n.p.: Jick head ... Whiskey head.
1970		in DARE.