We found 11 dictionaries that define the word gnaw at:

General (9 matching dictionaries)

1. gnaw at: Merriam-Webster
2. gnaw at: Vocabulary.com
3. gnaw at: Dictionary.com
4. gnaw at: Rhymezone
5. gnaw at: FreeDictionary.org
6. gnaw at: Mnemonic Dictionary
7. gnaw at: TheFreeDictionary.com

Computing (1 matching dictionary)

8. gnaw at: Encyclopedia

Miscellaneous (1 matching dictionary)

9. gnaw at: Idioms

Definitions from WordNet (gnaw at) ▸ verb:  become ground down or deteriorate Opposite: soothe, calm, ease, alleviate, relieve Phrases: gnaw away at, more... ▸ Words similar to gnaw at ▸ Usage examples for gnaw at ▸ Idioms related to gnaw at ▸ Wikipedia articles (New!) ▸ Words that often appear near gnaw at ▸ Rhymes of gnaw at ▸ Invented words related to gnaw at