/ Thesaurus / T Synonyms of tetrao urogallus Find synonyms for: Noun1. capercaillie, capercailzie, horse of the wood, Tetrao urogallus, grouseusage: large black Old World grouseWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language