Rubstone

The Century Dictionary and Cyclopedia
  • noun. A kind of close-grained sandstone or gritstone used for sharpening instruments and for polishing metallic surfaces.
  • noun. A whetstone; a rub.
    • the GNU version of the Collaborative International Dictionary of English
  • noun. A stone for scouring or rubbing; a whetstone; a rub.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. A stone for scouring or rubbing; a whetstone.
    • cross-reference
    kitchen rubstone  shoemakers' rubstone  
    Synonym
    Words with the same meaning
    rub  whetstone  
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