GRIND (2)

Grind (?), v. i. 1. 1. To perform the operation of grinding something; to turn the millstones.
Send thee Into the common prison, there to grind. Milton. 2. 2. To become ground or pulverized by friction; as, this corn grinds well.
3. 3. To become polished or sharpened by friction; as, glass grinds smooth; steel grinds to a sharp edge.
4. 4. To move with much difficulty or friction; to grate.
5. 5. To perform hard and distasteful service; to drudge; to study hard, as for an examination. Farrar.