THIMBLE

noun Etymology: Middle English thymel, thymbyl, from Old English thȳmel covering for the thumb, from thūma thumb Date: 15th century a pitted cap or cover worn on the finger to push the needle in sewing, 2. a grooved ring of thin metal used to fit in a spliced loop in a rope as protection from chafing, a lining (as of metal) for an opening (as in a roof or wall) through which a stovepipe or chimney passes