Where does “quarel” come from?

quarel (Old French) comes from Vulgar Latin quadrellus, from Latin quādrus, from Latin quattŭor, from Portuguese quarto, from Old Portuguese quarto, from Latin quārtus, from Proto-Indo-European kʷeturtos, from Proto-Indo-European kʷetwóres — and.

quarel (Old French): square block of stone; square-headed bolt for a...