colostrum Meaning, Definition & Usage

  1. noun milky fluid secreted for the first day or two after parturition
    foremilk.

WordNet

Co*los"trum noun
Etymology
L., biestings.
Definitions
  1. (Med.) (a) The first milk secreted after delivery; biestings. (b) A mixture of turpentine and the yolk of an egg, formerly used as an emulsion.

Webster 1913