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Definition of gnaw:

  1. To bite in agony or rage.
  2. To bite, as something hard or tough, which is not readily separated or crushed; to bite off little by little, with effort; to wear or eat away by scraping or continuous biting with the teeth; to nibble at.
  3. To corrode; to fret away; to waste.
  4. To use the teeth in biting; to bite with repeated effort, as in eating or removing with the teethsomething hard, unwiedly, or unmanageable.


chew, eat away, eat at, chomp, champ, bite, whittle away, attack, gnash, wear off, fret, masticate, corrode, champ, eat, gnaw at, ingestion, wear, whittle down, bite, erode, wear away.

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