gnaw

1. is a type of:

   • chew, jaw, manducate, masticate - chew (food); to bite and grind with the teeth
   • bite, seize with teeth - to grip, cut off, or tear with or as if with the teeth or jaws
2. is a type of: crumble, decay, dilapidate - fall into decay or ruin
   same as: eat at, erode, gnaw at, wear away

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