Definition of Noah's Dove in US English:

Noah's Dove

noun

Astronomy
rare
  • (The English name of) the constellation Columba (formerly known as Columba Noachi or Columba Noae).

Origin

Late 16th century; earliest use found in Thomas Blundeville (fl. 1561), author and translator. From the genitive of Noah, the name of a patriarch in the Old Testament + dove, with reference to the story in Genesis 6–9, so named with allusion to the constellation's proximity to the former constellation Argo, the ship.