Definition of house swallow in US English:

house swallow

noun

  • The barn swallow, Hirundo rustica (family Hirundinidae) with dark blue upper parts, reddish throat, and distinctive long, deeply forked tail, which breeds throughout much of the northern hemisphere, building its nests on the walls and eaves of buildings.

Origin

Late 16th century; earliest use found in John Bossewell (d. 1580), author.