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English definition of “quash”

quash

verb [T] (REFUSE)    /kwɒʃ/ US  /kwɑːʃ/
to say officially that something, especially an earlier official decision, is no longer to be accepted: His conviction was quashed in March 1986 after his counsel argued that the police evidence was all lies.Forbidding and banning thingsLegislation and law-making
(Definition of quash verb (REFUSE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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