/ Thesaurus / T Synonyms of third stomach Find synonyms for: Noun1. psalterium, omasum, third stomach, stomach, tummy, tum, breadbasketusage: the third compartment of the stomach of a ruminantWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language