Green’s Dictionary of Slang

kabeezer n.

the head.

1966		Gordon & Gordon Undercover Cat Prowls Again 194: Five minutes later you want to toss him out on his kabeezer.
2001		D.A. Martin MrSmartyPants.org , Bold and Beautiful Episode 22 Oct. 🌐 Deacon questioned her health after her fall from the Eiffel Tower. (Oh yeah, that right, she fell and busted her kabeezer.).