Green’s Dictionary of Slang

1. a general derog. epithet.

1944		J. Archibald ‘Meat Bawl’ in Popular Detective Aug. 🌐 Dude Geezle came to you because he wanted to quit black-marketin’, you dirty greaseball sabotager.
1990		T. Winton Human Torpedo 108: What is it with all those greaseball spanner-heads [...] You don’t go for dumb machos.
1996		(con. 1964-65) B. Thorpe Sex and Thugs and Rock ’n’ Roll 224: None of the greaseball dealers ever came around the flat.

2. Hispanic or Latin racially.

1970		E. Tidyman Shaft 134: Shaft sends us two greaseball punks.
2008		Simon & Burns ‘Cradle of Civilization’ Generation Kill ep. 2 [TV script] He’s not even a citizen. he snuck in from whatever fucking greaseball country he’s from and now he’s a Marine.
2012		T. Robinson ‘Angelo Death’ in Dirty Words [ebook] ‘This greaseball bastard is here to kill me!’.