whetstone Meaning, Definition & Usage

  1. noun a flat stone for sharpening edged tools or knives

WordNet

Whet"stone` noun
Etymology
AS. hwetstan.
Definitions
  1. A piece of stone, natural or artificial, used for whetting, or sharpening, edge tools.
    The dullness of the fools is the whetstone of the wits. Shak.
    Diligence is to the understanding as the whetstone to the razor. South.
    ✍ Some whetstones are used dry, others are moistened with water, or lubricated with oil.

Webster 1913