oilstone


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Related to oilstone: whetstone

oilstone:

see whetstonewhetstone,
natural or manufactured stone used as an abrasive solid to sharpen tools. It is used dry, with water, or with oil. Such a stone of the finer grade used with oil is usually called an oilstone.
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oilstone

[′ȯil‚stōn]
(materials)
A whetstone used with oil.

oilstone

A fine-grained stone used to impart a sharp edge on tools; oil is used to lubricate the rubbing surface.
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Dr Oilstone brings a new, more overt, sense of humour to the proceedings, his megaphoned announcements keeping the audience under control.
This time, they're joined by a new member, Dr Gravamen Oilstone.
For 25 years, I've been struggling with my trusty old oilstone to achieve the elusive razor-sharp edge.