Green’s Dictionary of Slang

(US, Western) used derog. of a Native American.

1867		Kansas Weekly Leader cited in Staff Indigenous Peoples (1988) 15: Indians are a set of miserable, dirty, louse-infected, gut-eating skunks.
1935		W. Coburn Law Rides the Range 44: Yo’re more harmless than a gut-eatin’ reservation squaw.
1949		Bellah She Wore a Yellow Ribbon [film script] It was Red Shirt himself, Captain. The black-hearted, gut-eatin’ son of a — [HDAS].
1960		E. Loomis Heroic Love 94: You goddam, gut-eating, calf-butchering Indian!