Definition of ferrule
1
: a ring or cap usually of metal put around a slender shaft (such as a cane or a tool handle) to strengthen it or prevent splitting
2
: a usually metal sleeve used especially for joining or binding one part to another (such as pipe sections or the bristles and handle of a brush)
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Merriam-Webster unabridged
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Time Traveler for ferrule
The first known use of ferrule was in 1611
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