We found 8 dictionaries that define the word willow trees:

General (6 matching dictionaries)

1. willow trees: Merriam-Webster
2. willow trees: Vocabulary.com
3. willow-trees: Wordnik
4. willow trees: Cambridge Advanced Learner's Dictionary
5. willow trees: Wiktionary
6. Willow trees: TheFreeDictionary.com

Computing (1 matching dictionary)

7. Willow trees: Encyclopedia

Medicine (1 matching dictionary)

8. Willow trees: Medical dictionary

(Note: See willow_tree as well.)

Definitions from Wiktionary (willow tree) ▸ noun:  A tree of the genus Salix. ▸ Also see willow_tree ▸ Words similar to willow trees ▸ Usage examples for willow trees ▸ Idioms related to willow trees ▸ Wikipedia articles (New!) ▸ Words that often appear near willow trees ▸ Rhymes of willow trees ▸ Invented words related to willow trees