Webster’s Revised Unabridged Dictionary · 1913
Rubstone
Rub′stone′ (rŭb′stōn′), n. A stone for scouring or rubbing; a whetstone; a rub.
Webster’s Revised Unabridged Dictionary · 1913
Rub′stone′ (rŭb′stōn′), n. A stone for scouring or rubbing; a whetstone; a rub.