/ Thesaurus / H Synonyms of hirundo pyrrhonota Find synonyms for: Noun1. cliff swallow, Hirundo pyrrhonota, swallowusage: North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and wallsWordNet 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