Main Entry: es·top

Pronunciation: \e-ˈstäp\

Function: transitive verb

Inflected Form(s): es·topped; es·top·ping

Etymology: Middle English estoppen, from Anglo-French estoper, estuper, from Vulgar Latin *stuppare to stop with a tow — more at stop

Date: 15th century

1 archaic : to stop up
2 : bar; specifically : to impede by estoppel