sharpener

Noun
  1. Any implement that is used to make something (an edge or a point) sharper (synset 104192114)
    "a knife sharpener"
    is a type of: implement - instrumentation (a piece of equipment or tool) used to effect an end
    subtypes:
    • grindstone - a revolving stone shaped like a disk; used to grind or sharpen or polish edge tools
    • pencil sharpener - a rotary implement for sharpening the point on pencils
    • steel - knife sharpener consisting of a ridged steel rod
    • strickle - an implement for sharpening scythes
    • strop - a leather strap used to sharpen razors

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