A metallic case, worn by tailors and sempstresses upon the finger, for the purpose of pressing needles through the stuff in sewing. An instrument, answering the same purpose, is worn by sailors and sail-makers in the palms of their hands by straps which fasten it thereto; they are technically called palms, and are small circular plates of cast iron, indented on the surface. Thimble is the name also given to circular rings of iron, hollow on the outside, for a rope which envelopes it to be securely imbedded therein; a metallic eye is thus formed, for passing another rope through, or hanging on to it by a hook, a tackle block, etc.