hirundo pyrrhonota is a noun meaning "North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and walls". It carries one recorded sense.
North American swallow that lives in colonies and builds bottle-shaped mud nests on cliffs and walls
Definitions, synonyms and semantic relations for hirundo pyrrhonota come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.