es·top 
(ĕ-stŏp)
(ĕ-stŏp)tr.v. es·topped, es·top·ping, es·tops
1. Law To impede or prohibit by estoppel.
2. Archaic To stop up.
[Middle English estoppen, from Anglo-Norman estopper, from Vulgar Latin *stuppāre, to stop up; see STOP.]
es·toppage (ĕ-stŏpĭj) n.