Unicorn vs. Alicorn

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

A heraldic representation of such a beast used as a charge or as a supporter; as in the arms of Great Britain and of Scotland.

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

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

The larva of a unicorn moth.

The kamichi, or unicorn bird.

(military) A howitzer.

(sexual slang) A single, usually bisexual woman who participates in swinging and/or polyamory.

(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.

(business) A person with multidisciplinary expertise (due to rarity and value), especially three or more skills in a young field such as UX design or data science (e.g., domain knowledge, statistics, and software engineering).

(as a modifier) Brilliantly multicoloured.

Example: ‘unicorn smoothies’;

A fabulous animal with one horn; the monoceros; - often represented in heraldry as a supporter.

A two-horned animal of some unknown kind, so called in the Authorized Version of the Scriptures.

Example: ‘Canst thou bind the unicorn with his band in the furrow?’;

Any large beetle having a hornlike prominence on the head or prothorax.

The kamichi; - called also unicorn bird.

A howitzer.

an imaginary creature represented as a white horse with a long horn growing from its forehead

The unicorn is a legendary creature that has been described since antiquity as a beast with a single large, pointed, spiraling horn projecting from its forehead. The unicorn was mentioned by the ancient Greeks in accounts of natural history by various writers, including Ctesias, Strabo, Pliny the Younger, Aelian and Cosmas Indicopleustes.

The horn of a unicorn considered as a medical or pharmacological ingredient.

(nonstandard) A mythological creature, a mixture of pegasus and unicorn: a winged horse with a single horn on its head.