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Meaning of ring of steel | Babel Free

Noun CEFR C1

Definitions

A form of civil protection (using closed-circuit television, control zones and restricted access) that effectively seals off city centres and financial districts; used in Northern Ireland and the City.

British

CEFR level

C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
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See also

ring of the fisherman ring of truth ring off the hook ring oscillator ring out ring ouzel

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