collet

Noun
  1. A metal cap or band placed on a wooden pole to prevent splitting (synset 103334481)
    is a type of: cap - something serving as a cover or protection
    same as: ferrule
  2. A cone-shaped chuck used for holding cylindrical pieces in a lathe (synset 103074063)
    is a type of: chuck - a holding device consisting of adjustable jaws that center a workpiece in a lathe or center a tool in a drill
    same as: collet chuck
  3. A band or collar that holds an individual stone in a jewelry setting (synset 103073923)
    is a type of: band - a restraint put around something to hold it together
    is a part of: mounting - framework used for support or display

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