What is "butyrin"

Butyrin \Bu"ty*rin\, n. (Physiol. Chem.) A butyrate of glycerin; a fat contained in small quantity in milk, which helps to give to butter its peculiar flavor.

n. (context organic compound English) The triglyceride of butyric acid; the principal constituent of butterfat

n. any of three glycerides of butyric acid