/ Thesaurus / S Synonyms of splint bone Find synonyms for: Noun1. splint bone, bone, osusage: a rudimentary metacarpal or metatarsal bone on either side of the cannon bone in the leg of a horse or related animalWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language