black swan

Tanımlar (İngilizce)

1. isim Cygnus atratus, a swan with black plumage and a red bill which is endemic to Australia.

   “If you tell me that there is or that there is not a black swan or a white raven, I want to know where you mean; and that you can only show me,—no description will answer the purpose.”

2. isim Something believed impossible or not to exist, especially if an example is subsequently found; also, something extremely rare; a rara avis.

   “I do but ſpeake in the perſon of Demetrius, & vnder Hippolita ſhadovv vvhat I intend to the rare, and neuer enough vvondred at Moſpa, the black ſvvan of beauty, & madg-hovvled of admiration.”

3. isim A rare and hard-to-predict event with major consequences.

   “Worried that Greece could go belly up? So-called black swan funds – named for rare and unexpected events – offer a way to profit in the event of a market collapse.”