We found 16 dictionaries that define the word white walnut:

General (13 matching dictionaries)

1. white walnut: Merriam-Webster
2. white walnut: Oxford Learner's Dictionaries
3. white walnut: American Heritage Dictionary of the English Language
4. white walnut: Collins English Dictionary
5. white walnut: Vocabulary.com
6. white walnut: Wordnik
7. white walnut: Infoplease Dictionary
8. white walnut: Dictionary.com
9. white walnut: Rhymezone
10. white walnut: FreeDictionary.org
11. white walnut: Mnemonic Dictionary
12. white walnut: TheFreeDictionary.com
13. white walnut: Wiktionary

Computing (1 matching dictionary)

14. white walnut: Encyclopedia

Medicine (1 matching dictionary)

15. Hepatitis C Information Central (No longer online)

Science (1 matching dictionary)

16. A Modern Herbal, 1931, by Mrs. M. Grieve (No longer online)

(Note: See white_walnuts as well.)

Definitions from Wiktionary (white walnut) ▸ noun:  A butternut tree (Juglans cinerea), of eastern North America. ▸ noun:  Pepperberry, am Australian tree of species Cryptocarya obovata. ▸ Words similar to white walnut ▸ Usage examples for white walnut ▸ Idioms related to white walnut ▸ Wikipedia articles (New!) ▸ Words that often appear near white walnut ▸ Rhymes of white walnut ▸ Invented words related to white walnut