A wheel composed of an abrasive compound and used for various grinding and abrasive machining operations. / (figuratively, by extension) Something that wears down or harms by attrition.

(engineering) functional unit of an apparatus that breaks solid materials into smaller pieces

present participle of bump and grind

(idiomatic) The difficult, routine, or monotonous tasks of daily work.

(intransitive, of an activity) To come to a standstill, or cease to be productive or make progress, due to an obstacle.

Alternative spelling of bump and grind

(idiomatic) A sexually suggestive dance involving exaggerated hip movements, especially a striptease dance.

(idiomatic) To perform such a dance or such movements.

(British spelling) Alternative spelling of ax to grind

(American spelling) A proposition or point of view to advocate, especially motivated by self-interest.