/ Thesaurus / S Synonyms of sand crack Find synonyms for: Noun1. sand crack, animal diseaseusage: a fissure in the wall of a horse's hoof often causing lamenessWordNet 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