unicorn

noun

uni·​corn ˈyü-nə-ˌkȯrn How to pronounce unicorn (audio)
plural unicorns
1
a
: a mythical, usually white animal generally depicted with the body and head of a horse with long flowing mane and tail and a single often spiraled horn in the middle of the forehead
b
: an animal mentioned in the Bible that is usually considered an aurochs, a one-horned rhinoceros, or an antelope
2
: something unusual, rare, or unique
There's the elusive unicorn: headphones that do everything well and work in any situation.Damon Darlin
In Washington, D.C., truth is now a veritable unicorn.Marilyn M. Singleton
… he's like baseball's version of a unicorn—a true two-way player.Tony Paul
3
business : a start-up that is valued at one billion dollars or more
… a tech unicorn in Michigan is even more of a rarity, far from Silicon Valley's investor echo chamber.Scott Martin
The blockbuster initial public offering is expected to kick off a revitalized market this year, encouraging IPO debuts by other unicorns, the privately held start-ups whose hefty venture capital funds have allowed them to avoid Wall Street and the legal requirements of a public offering.Jon Swartz

Illustration of unicorn

Illustration of unicorn

Examples of unicorn in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
No player who picks LSU walks into the first practice expecting all rainbows and unicorns; no assistant who accepts a job on her staff expects an environment devoid of fiery moments. Chantel Jennings, New York Times, 28 Mar. 2025 The movie about a father (Rudd) who, while on a business trip with his daughter (Zegler), hits a unicorn on the road, setting off a horrific chain of events, got so-so reviews out of SXSW at 59% Rotten. Anthony D'alessandro, Deadline, 26 Mar. 2025 Tight ends First-day targets Tyler Warren, Penn State Warren is a 6-5, 256-pound unicorn who seemingly can do it all from the TE position — and did in a creative PSU offense. Joseph Person, The Athletic, 24 Mar. 2025 Accompanying the post is an image of a small purse shaped like a unicorn's head, appearing to be covered in sparkles. Mark Davis, Newsweek, 14 Mar. 2025 See All Example Sentences for unicorn

Word History

Etymology

Middle English unicorne, from Anglo-French, from Late Latin unicornis, from Latin, having one horn, from uni- + cornu horn — more at horn

First Known Use

13th century, in the meaning defined at sense 1a

Time Traveler
The first known use of unicorn was in the 13th century

Browse Nearby Words

Cite this Entry

“Unicorn.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unicorn. Accessed 7 Apr. 2025.

Kids Definition

unicorn

noun
: an imaginary animal generally represented with the body and head of a horse and a single horn in the middle of the forehead
Etymology

Middle English unicorne "unicorn," from early French unicorne (same meaning), derived from Latin unicornis "having one horn," from uni- "one" and cornu "horn" — related to corn entry 3, universe

Medical Definition

unicorn

adjective
: having a single horn or hornlike process
a unicorn uterus

More from Merriam-Webster on unicorn

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