estoppel Meaning, Definition & Usage

noun a rule of evidence whereby a person is barred from denying the truth of a fact that has already been settled

From Estop.

(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. Wharton. Stephen. Burrill.