DICT.TW Dictionary Taiwan

 es·top·pel /ɛˈstɑpəl/
 禁止反言,禁止,防止

 Es·top·pel n.  Law (a) A stop; an obstruction or bar to one's alleging or denying a fact contrary to his own previous action, allegation, or denial; an admission, by words or conduct, which induces another to purchase rights, against which the party making such admission can not take a position inconsistent with the admission. (b) The agency by which the law excludes evidence to dispute certain admissions, which the policy of the law treats as indisputable.
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 estoppel
      n : a rule of evidence whereby a person is barred from denying
          the truth of a fact that has already been settled