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English definition of “jail”

jail

noun [C or U] (UK old-fashioned gaol)     /dʒeɪl/
B1 a place where criminals are kept to punish them for their crimes, or where people accused of crimes are kept while waiting for their trials: the country's overcrowded jails a 13-year jail sentence/term The financier was released from jail last week. They spent ten years in jail for fraud.Prisons and parts of prisons
(Definition of jail noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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