Definition of oilstone in English:

oilstone

noun

  • A fine-grained flat stone used with oil for sharpening cutting edges.

    • ‘This can be done by rubbing away surplus metal with a grindstone, whetstone, oilstone, steel, ceramic rod, leather strop or the palm of your hand.’
    • ‘He's currently sharpening one of his chisels at the oilstone in the corner of the room.’

Pronunciation:

oilstone

/ˈoilstōn/