unicorn
n//ˈjunɪkɔɹn//enhörning
A mythical horse with a single, straight, spiraled horn projecting from its forehead.
(finance) A startup company whose valuation has exceeded one billion U.S. dollars, which is solely backed by venture capitalists, and which has yet to have an IPO.
(historical) A 15th-century Scottish gold coin worth 18 shillings, bearing the image of a unicorn.