black swan (English, noun)
expansion: black swan (plural black swans)
Senses:
glosses: Cygnus atratus, a swan with black plumage and a red bill which is endemic to Australia.
glosses: Something believed impossible or not to exist, especially if an example is subsequently found; also, something extremely rare; a rara avis.
tags: figuratively
glosses: A rare and hard-to-predict event with major consequences.
tags: also
attributive
figuratively
specifically
Forms:
form: black swans
tags: plural