\Biest"ings\, Beestings \Beest"ings\, n. pl. [OE. bestynge, AS. b[=y]sting, fr. b[=y]st, beost; akin to D. biest, OHG. biost, G. biest; of unknown origin.] The first milk given by a cow after calving. --B. Jonson. The thick and curdy milk . . . commonly called biestings. --Newton. (1574).