An Etymological Dictionary of the German Language/Brut

by Friedrich Kluge

Brut, f., ‘brood, spawn, brats,’ from MidHG. and OHG. bruot, f., ‘vivified by warmth, brood, animation by warmth, brooding, heat’; comp. Du. broed, AS. brôd. E. brood. The dental is deriv.; brô, as the root-syllable, is discussed under Brühe; the primary root signified ‘to warm, heat.’ —