A form of milk produced by the mammary glands in late pregnancy and the few days after giving birth. Human and bovine colostrum is thick and yellowish. In humans, it has high concentrations of nutrients and antibodies, but it is small in quantity.
A mixture of turpentine and egg yolk, formerly used as an emulsion.
The first milk drawn from a cow during milking; in humans, the milk secreted initially during breastfeeding, typically low in fat and rich in protein.