Green’s Dictionary of Slang

a bad temper.

1838		Southern Literary Messenger 4:3 162/1: ‘How did Caesar like that?’ ‘Well, it sort o’ raised his Africky at first; but that didn’t last long.’.
1994		C. Major Juba to Jive 3: Africky n. (1620s–1920s) anger; bad temper.