grinding

Noun
  1. is a type of: atom, corpuscle, molecule, mote, particle, speck - (nontechnical usage) a tiny piece of anything
  2. is a type of: noise - sound of any kind (especially unintelligible or dissonant sound)
  3. is a type of: friction, rubbing - the resistance encountered when one body is moved in contact with another
    same as: abrasion, attrition, detrition

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