We found one dictionary that defines the word gray walnut:

General (1 matching dictionary)

1. gray walnut: Merriam-Webster

▸ Words similar to gray walnut ▸ Usage examples for gray walnut ▸ Idioms related to gray walnut ▸ Wikipedia articles (New!) ▸ Words that often appear near gray walnut ▸ Rhymes of gray walnut ▸ Invented words related to gray walnut