A mythical, horselike creature with a horn on its forehead, supposed to be very rare and to be drawn to virgins and other chaste maidens. • In various Bible translations, used to render the Latin unicornis or rhinoceros (representing Hebrew רְאֵם): a reem or wild ox. • Certain animals: • 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 Siberian unicorn, †Elasmotherium sibiricum. • An Asian unicorn, or saola, Pseudoryx nghetinhensis. • A howitzer. • Someone or something that is rare and hard to find. • A single, usually bisexual woman who participates in swinging or polyamory. • A person with multidisciplinary expertise, especially a laundry list of three or more skills in a young field such as UX design or data science (e.g., domain knowledge, statistics, and software engineering). • 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. • A fan with serious aspirations to become romantically involved with a VTuber (i.e., the streamer behind the avatar). • Being many (especially pastel) colours; multicoloured. • A 15th-century Scottish gold coin worth 18 shillings, bearing the image of a unicorn.