gnaw at
Definition of gnaw at
: to be a source of worry or concern to (someone) This problem has been gnawing at me day and night. She says she's fine, but I can see that something is gnawing at her.
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Word by Word Definitions
gnawplay
: to bite or chew on with the teeth
: to wear away by persistent biting or nibbling
: to make by gnawing
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