Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of rubstone is as below...

Rubber :: Rubber (n.) A whetstone; a rubstone.

Rub :: Rub (n.) A stone, commonly flat, used to sharpen cutting tools; a whetstone; -- called also rubstone..

Rubstone :: Rubstone (n.) A stone for scouring or rubbing; a whetstone; a rub.

Scrubstone :: Scrubstone (n.) A species of calciferous sandstone.

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