noun. a rule of evidence whereby a person is barred from denying the truth of a fact that has already been settled.
Example sentences of the word estoppel
The estoppel letter is part of the full disclosure.
2. Noun, singular or mass
There cannot be any implied promise -- legally known as promissory estoppel -- of a job, nor can there be any hint of discrimination or bias tied to the cause of the change of heart.