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Meaning of hustle alarm | Babel Free

Noun CEFR B2

Definitions

An audible warning, on some trains, that the automatic doors are about to close.

CEFR level

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

hustle and bustle hustle kingdom hustle-bustle Hustled hustlee hustlement

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