grinding

The action of grinding together or crushing into small particles; the sound of this action.

Ominous creakings and grindings came from the innards of the machine.

The action of grinding a workpiece to change its size, shape, and surface finish.

Grinding sometimes involves tight tolerances on the order of a few microns.

A form of dance in which two people rub their bodies together.

No grinding is allowed on the dance floor at the junior prom: it isn't age-appropriate.

Repeatedly performing the same quest or similar in-game activity in order to amass points or wealth.

I really hate the grinding to get that 1% chance item.

The act of doing the daily grind.

A: Hey Bob, how's it goin? B: Meh, I'm tired of grinding, man.

Of or pertaining to the act or gratingly sound of grinding.

The meeting came to a grinding halt when the two sides could not agree.

Relentlessly taxing; burdensome; exacting to the point of exhaustion.

A week of filled with grinding toil.

I saw none of the grinding poverty to which I had become inured, no beggars, no one passed out in the streets or homeless people forced to camp out in parks and doorways.

Crushing; oppressive; overwhelming.