psalterium(n = noun.animal) omasum, third stomach - the third compartment of the stomach of a ruminant;
is a kind of breadbasket, stomach, tum, tummy
is a part of ruminant
The third stomach of ruminants. See Manyplies. [1913 Webster]
psalterium, n. the third stomach of a ruminant, the omasum.
Etymology:
L (see PSALTER): named from its booklike form