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: to stop up
: to impede by estoppel
15th century, in the meaning defined at sense 1
Middle English estoppen, from Anglo-French estoper, estuper, from Vulgar Latin *stuppare to stop with a tow — more at stop
Anglo-French estop(p)er, literally, to stop up, from Middle French estouper, ultimately from Latin stuppa hemp fiber (used for plugging holes)
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: to impede or bar by estoppel
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