Where does “brood” come from?

brood (Dutch) comes from Middle Dutch brôot, from Old Dutch *brōt, from Proto-West Germanic braud, from English Berwald, from Proto-West Germanic berō, from Proto-Germanic berô, from Proto-Indo-European bʰerH- — to pierce; to strike; brown.

brood (Dutch): Bread; A loaf of bread; A similar bakery product...