Estop \Es*top"\, v. t. [imp. & p. p. {Estophed}; p. pr. & vb. n.
{Estopping}.] [OF. estoper to stop, plug, close, F.
['e]touper, LL. stuppare to close with tow, obstruct, fr. L.
stuppa tow, oakum, cf. Gr. sty`pph. Cf. {Stop}.] (Law)
To impede or bar by estoppel.
[1913 Webster]
A party will be estopped by his admissions, where his
intent is to influence another, or derive an advantage
to himself. --Abbott.
[1913 Webster]