Definition of "estop" in Anglais

verb

1. (law) To impede or bar by estoppel.

   • 2020: "Nancy Pelosi Should Take All the Time She Needs to Submit Articles of Impeachment" by Philip Bobbitt, Slate.com Finally, new evidence—emails surrounding the decision to withhold appropriated military assistance from Ukraine—has come out since the vote. Is anyone suggesting that the House managers be estopped from presenting this evidence?

2. To stop up; to plug.