/ Thesaurus / C Synonyms of cliff brake Find synonyms for: Noun1. cliff brake, cliff-brake, rock brake, fernusage: any of several small lithophytic ferns of tropical and warm temperate regionsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language