croque-mort

croque-mort is masculine or feminine depending on context in French.

undertaker; mortician

“Au fossoyeur, au croque-mort, au curé, aux chevaux même ils payaient un verre.” — They treated the gravedigger, the undertaker, the curate, and even the horses to a drink.

Uncertain, possibly from dated verb croquer (“to make disappear”) or from croc (“hook”).