beast·ings (bē'stĭngz) pl.n.
(used with a sing. or pl. verb) Variant of beestings.
beest·ings also beast·ings (bē'stĭngz) pl.n.
(used with a sing. or pl. verb) The first milk secreted by a mammal, especially a cow, after parturition; colostrum.
[Middle English bestinggis, pl. of besting, from Old English bȳsting, from bēost, beestings.]