black swan

black swan

n 1. (Animals) a large Australian swan, Cygnus atratus, that has a black plumage and red bill 2. a phenomenon that occurs even though it had been thought to be impossible [sense 2 from the fact all swans were thought to be white until black swans were discovered in Australia]

Thesaurus

Noun

1.

black swan - large Australian swan having black plumage and a red billCygnus atratusswan - stately heavy-bodied aquatic bird with very long neck and usually white plumage as adultgenus Cygnus, Cygnus - a genus of Anatidae

Translations