huck, n. — Green’s Dictionary of Slang

huck n.

[? proper name Huckleberry Finn, hero of Mark Twain’s novel The Adventures of Huckleberry Finn (1884)]

1. (US) a person.

c.1910		in J.G. Rosa They Called Him Wild Bill (1979) 194: In a flash I had the other huck by the throat.
1988		S. King Tommyknockers (1989) 10: Looky ’yere, Huck.

2. a black person; also attrib.

1929		T. Gordon Born to Be (1975) 220: So when this spade tried to find the other two hucks they couldn’t be found anywhere.
1935		L. Hughes Little Ham 79: Girl, my new man bought me the prettiest velveteen evening coat you ever seen yesterday from a hot selling huck [HDAS].
1936		D. Burley in Chicago Defender 30 May 10: They call Detroit’s huck district ‘Paradise valley’.