初乳
Colostrum \Co*los"trum\, n. [L., biestings.] (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.
colostrum n : milky fluid secreted for the first day or two after parturition [syn: {foremilk}]