The abomasum, also known as the maw, The Chambers Dictionary, Ninth Edition, Chambers Harrap Publishers, 2003 and the rennet-bag, and the read, is the fourth and final stomach compartment in ruminants. It secretes rennet, an ingredient used in cheese creation. The word abomasum is from New Latin and it was first used in English in 1706. It comes from Latin ab- + omasum "intestine of an ox," and it's possibly from the Gaulish language. The abomasum's normal anatomical location is along ventral mi… (More on Abomasum)