unicorn

A mythical beast resembling a horse or deer with a single, straight, spiraled horn projecting from its forehead.

In various Bible translations, used to render the Latin unicornis or rhinoceros (representing Hebrew רְאֵם): a reem or wild ox.

Any large beetle having a horn-like prominence on the head or prothorax, especially the Hercules beetle, Dynastes tityus.

A caterpillar, Schizura unicornis, with a large thorn-like spine on the back near its head.

The kamichi, or unicorn bird.

A howitzer.

Someone or something that is rare and hard to find.

Being many (especially pastel) colours; multicoloured.

“unicorn smoothies”

A 15th-century Scottish gold coin worth 18 shillings, bearing the image of a unicorn.

(sexual slang) To participate in a sexual threesome as a bisexual addition to an established heterosexual couple.

To exceed a valuation of one billion U.S. dollars, while solely backed by venture capitalists.