/ Thesaurus / E Synonyms of elbow bone Find synonyms for: Noun1. ulna, elbow bone, arm boneusage: the inner and longer of the two bones of the human forearmWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language