ferrule
noun/ˈferuːl/
/ˈferəl/
- a piece of metal or rubber that covers the end of an umbrella or a stick to protect itWord Originearly 17th cent.: alteration (probably by association with Latin ferrum ‘iron’) of obsolete verrel, from Old French virelle, from Latin viriola, diminutive of viriae ‘bracelets’.
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ferrule