Where does “Maul” come from?

Maul (German) comes from Middle High German mūl, from Old High German mūl, from Proto-West Germanic *mūl, from Proto-Germanic mūlą, from Proto-Indo-European mū- — fly, mosquito; fly, midge; lips, muzzle.

Maul (German): mouth of an animal; mouth of a person; a part of...