/ Thesaurus / L Synonyms of lumbus Find synonyms for: Noun1. loin, lumbus, body partusage: either side of the backbone between the hipbone and the ribs in humans as well as quadrupedsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language