(dated) Do not cry over spilt milk; what has already happened cannot be changed or repaired.

One who grinds something, such as the teeth. / (anatomy) A molar. / (slang) Any tooth. / A power tool with a spinning abrasive disc, used for grinding, smoothing, and shaping materials, usually metal.

(idiomatic, obsolete) Used to form idioms meaning "to force someone to work hard or to focus intensely upon their work".

(idiomatic) Hard at work.

A device for pulverizing or powdering coffee beans so they can be brewed as coffee. (Technically many of the machines tear the coffee beans).

An abrasive wheel for sharpening, polishing or grinding.

plural of grinder

plural of grindstone

A usually hand-held grinder which uses a pair of internal gears to place the rotational axis of the grinding or cutting wheel perpendicular to that of the driving motor.

A genre of death metal music or hardcore punk, incorporating aggressive guitar riffs, extremely rapid drumming and loud, undecipherable screaming.