English Reference

Word

unicorn

Phoneticsuni·corn

US/ˈjunɪˌkɔɹn/

UK/jˈuːnɪkˌɔːn/

Definitions

01mythical creature

B1 · Intermediate Countable noun

n. a legendary animal that looks like a white horse with a single long horn on its head.

n. a legendary creature typically depicted as a horse with a single, spiralled horn projecting from its forehead.

“The children loved reading stories about brave knights and magical unicorns.”

“Medieval tapestries often depicted the unicorn as a symbol of purity and grace, trapped within a small wooden fence.”

02business valuation

B2 · Upper Intermediate Countable noun Computing Academic · Technical

n. a private startup company that is worth more than one billion dollars.

n. a privately held startup company with a current valuation of one billion US dollars or more.

“The app became a unicorn just two years after it was launched.”

“Investors are increasingly cautious about pouring capital into potential unicorns that lack a clear path to profitability despite their high valuations.”

03rare person or thing

C1 · Advanced Countable noun Informal

n. a person or thing that is very rare and difficult to find.

n. a person or thing that is exceptionally rare, highly desirable, and difficult to encounter in a specific context.

“A reliable mechanic who charges fair prices is a total unicorn.”

“Finding a candidate with both deep technical expertise and high-level management experience proved to be a search for a true unicorn.”

Synonyms

04multicoloured

B2 · Upper Intermediate Informal

adj. having many bright or pastel colours, like a rainbow.

adj. characterised by a vibrant, multicoloured, or pastel aesthetic, often associated with fantasy themes.

“She dyed her hair a unicorn mix of pink, purple, and blue.”

“The bakery specialised in unicorn cakes decorated with iridescent glitter and multi-hued frosting.”

Antonyms

05to reach high valuation

C1 · Advanced Computing Technical · Informal

v. to reach a business value of over one billion dollars.

v. to achieve a valuation exceeding one billion dollars as a privately held company.

“The fintech startup is expected to unicorn by the end of the fiscal year.”

“Few companies manage to unicorn within their first eighteen months of operation without significant venture capital backing.”

Real-World Examples

“Iris’s dad can turn into dinosaurs, unicorns, anything she imagines – though some people see Dad’s wheelchair and believe he can’t do anything.”
The Guardian 26 Jun 2026

Etymology

From Middle English unicorne, unikorn, from Anglo-Norman unicorne, Old French unicorne, and their source, Latin ūnicornis, from ūnus (“one”) + cornū (“horn”). Displaced native Old English ānhorn, itself a calque. Other senses from either rarity (e.g., possessing multiple skills) or by physical resemblance to having a horn (e.g., howitzer). The finance sense was coined by American investor Aileen Lee and first used in a 2013 article.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Idioms

The word in film

The Last Unicorn · 1982 · Fantasy

Directed by:
Jules Bass
Starring:
Alan Arkin, Jeff Bridges, Mia Farrow

Jules Bass's 1982 animated fantasy centres on a magical white horse with a single horn who believes she is the only one left in the world. Voiced by Mia Farrow, she starts a journey to find others like her.

Poster for The Last Unicorn

Original artwork: theatrical release poster.

The Last Unicorn · 1968 · Fantasy

In this 1960s fantasy, the story centres on a magical horse-like animal with one horn. Last in the title suggests it may be the only one of its kind still alive.

Domains

BusinessFinanceMilitary

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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