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bouchon

noun
bou·​chon | \(ˈ)bü¦shän, -shōⁿ\
plural -s

Definition of bouchon 

1 : a bushing pressed into a bridge or plate of a timepiece

2 : the plug and fuze assembly of a grenade

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History and Etymology for bouchon

French, bouchon, cork, sheaf, from Middle French, cork, sheaf, from bouche bunch, sheaf

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