knife grinder

noun

Definition of knife grinder

  1. 1 :  one that grinds knives: such as a :  an itinerant tradesman who sharpens knives or other edged tools b :  a device (as a grindstone or emery wheel) used for grinding or sharpening knives or other edged tools

  2. 2 :  a European nightjar (Caprimulgus europaeus)

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