Definition of thimble
1
: a pitted cap or cover worn on the finger to push the needle in sewing
2a
: a grooved ring of thin metal used to fit in a spliced loop in a rope as protection from chafing
b
: a lining (as of metal) for an opening (as in a roof or wall) through which a stovepipe or chimney passes
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Merriam-Webster unabridged
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Time Traveler for thimble
The first known use of thimble was in the 15th century
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