Phrase guide

blue box

noun · 5 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

noun

Meaning 1

A blue container used for the collection of household waste (such as tin cans and newspapers) for recycling by a municipal authority.

Definition source: English Wiktionary via Wiktextract

Usage: Canada, UK

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An electronic device used to bypass payment on a tone pulse telephone system.

Definition source: English Wiktionary via Wiktextract

Usage: historical

Topics: communications, electrical-engineering, engineering, natural-sciences, physical-sciences, telecommunications, telephony

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A "tornado watch" notification category.

Definition source: English Wiktionary via Wiktextract

Usage: US, informal

Topics: climatology, meteorology, natural-sciences

Examples

  • See also: severe thunderstorm watch

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Ellipsis of USPS blue box.

Definition source: English Wiktionary via Wiktextract

Usage: US, abbreviation, alt-of, ellipsis

Qualifier: postal

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Used other than figuratively or idiomatically: see blue, box.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.