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Meaning of hook flash | Babel Free

Noun CEFR B2

Definitions

A signal that briefly disconnects the local loop circuit by means of the hookswitch or a dedicated button, used to control functions on the public telephone exchange.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

hook ladder hook maneuver Hook Norton Hook of Holland hook pin Hook Point poison

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