資料來源 : pyDict

油磨刀石

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Oilstone \Oil"stone`\, n.
   A variety of hone slate, or whetstone, used for whetting
   tools when lubricated with oil.

資料來源 : WordNet®

oilstone
     n : a whetstone for use with oil