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Meaning of four-minute warning | Babel Free

Noun CEFR B2

Definitions

A UK government public alert system in use during the Cold War to advise of an imminent nuclear attack.

idiomatic

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

four-momentum four-on-the-floor four-peat four-point Calvinist four-poster four-poster bed