Phrase guide

Union Jack

noun · 6 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

The flag of the United Kingdom, consisting of the flags of England (St. George's Cross), Scotland (St. Andrew's Cross), and Ireland (St. Patrick's Cross, now only used in Northern Ireland) combined.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The British Empire.

Definition source: English Wiktionary via Wiktextract

Usage: broadly

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

The flag, consisting of the flags of England, Scotland, and Northern Ireland combined, flown on ships of the government of the United Kingdom.

Definition source: English Wiktionary via Wiktextract

Usage: UK

Topics: nautical, transport

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

The flag, consisting of the blue star-studded field in the corner of the national ensign, flown at the jackstaff by ships at anchor.

Definition source: English Wiktionary via Wiktextract

Usage: US

Topics: nautical, transport

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Alternative letter-case form of Union Jack

Definition source: English Wiktionary via Wiktextract

Usage: alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

national flag of the United Kingdom

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Union flag

Antonyms: none provided

Broader terms: flag

History

Etymology

From union + jack (“ship’s flag”).

Across languages

Translations

10 source translations are retained for this English entry.

  • Chinese Mandarin: 米字旗 (Mǐzìqí) — flag of the UK
  • Georgian: იუნიონ-ჯეკი (iunion-ǯeḳi) — flag of the UK
  • Hebrew: יוניון ג׳ק (Yunion Jaq) — flag of the UK
  • Japanese: ユニオンジャック (Yunion Jakku) — flag of the UK
  • Korean: 유니언 잭 (Yunieon jaek) — flag of the UK
  • Marathi: युनियन जॅक (yuniyan jĕk) — flag of the UK
  • Russian: Ю́нион Джек (Júnion Džek) — flag of the UK
  • Russian: Юнио́н Джек (Junión Džek) — flag of the UK
  • Russian: Ю́нион Джек (Júnion Džek) — flag of the US (nautical)
  • Russian: Юнио́н Джек (Junión Džek) — flag of the US (nautical)