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English definition of “estoppel”

estoppel

noun [S or U] uk   /ɪˈstɒp.əl/ us    /-ˈstɑː.pəl/ specialized
a legal rule that prevents someone from changing their mind about something they have previously said is true in court
(Definition of estoppel from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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