"colostrum," late Old English bysting, from beost "first milk of a cow after calving," a general West Germanic word (cognates: Old High German biost, German Biest, Middle Dutch and Dutch biest, North Frisian bjast) of unknown origin.
beep
beeper
beer
beery
bee-sting
beestings
beeswax
beet
beetle
beetle-browed
beet-root