English Reference

Word

ruby

Phoneticsru·by, stress on the first syllable

US/ˈɹubi/

UK/ɹˈuːbi/

Definitions

01gemstone

B2 · Upper Intermediate Countable noun

n. a valuable, clear, deep red stone used in jewelry.

n. a precious variety of the mineral corundum, characterized by its deep red color and high value as a gemstone.

“The queen wore a stunning necklace with a large ruby in the center.”

“The jeweler examined the ruby under a loupe to check for natural inclusions that would verify its origin.”

Synonyms

02color

B2 · Upper Intermediate Uncountable noun

n. a dark, rich red color.

n. a deep, vibrant shade of red resembling the gemstone.

“The curtains were a rich ruby that matched the carpet perfectly.”

“The sunset painted the clouds in shades of ruby and gold as the light faded.”

Synonyms

03pronunciation guide

C2 · Proficiency Uncountable noun Computing Technical

n. small characters written above or beside Chinese or Japanese text to show how to say them.

n. small, annotative characters placed above or beside logographic characters in East Asian typography to indicate pronunciation.

“The children's book used ruby text to help students read difficult characters.”

“Modern web browsers support the ruby element, allowing for the correct display of phonetic annotations in Japanese text.”

Synonyms

furigana

04curry

C1 · Advanced Countable noun Cooking British English · Slang · Informal

n. a slang word for a curry meal.

n. a slang term for a curry, derived from the Cockney rhyming slang 'Ruby Murray'.

“Do you want to go out for a ruby tonight?”

“After the football match, the group headed to the local Indian restaurant for a ruby.”

Synonyms

05color description

B2 · Upper Intermediate

adj. having a deep red color.

adj. having the deep red color characteristic of a ruby.

“She sipped the ruby wine and enjoyed the quiet evening.”

“The bird's ruby throat shimmered whenever it moved into the direct sunlight.”

Synonyms

06to make red

C2 · Proficiency Literary

v. to make something turn red.

v. to impart a red color to something; to redden.

“The setting sun rubied the mountain peaks.”

“The evening light rubied the surface of the lake, creating a dramatic contrast with the dark trees.”

Synonyms

reddenflush

Antonyms

Usage

Often used as a modifier before other nouns to describe a deep red color.

Etymology

The female name derives from ruby in the 19th century. The programming language was named after the gemstone.

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

Related words

Idioms

Domain

Printing

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

QR code

englishreference.com/q/ruby

English Reference