grind
To reduce to smaller pieces by crushing with lateral motion.
Other meanings
To shape with the force of friction.
“grind a lens; grind an axe”
To remove material by rubbing with an abrasive surface.
Word history
From Old English "grindan" (to grind).
Where this comes from
This definition is adapted from “grind” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.