We found 15 dictionaries that define the word oak tree:

General (10 matching dictionaries)

1. oak tree: Vocabulary.com
2. oak-tree: Wordnik
3. oak tree: Wiktionary
4. oak tree: Dictionary.com
5. Oak Tree (disambiguation), Oak Tree, Oak tree: Wikipedia, the Free Encyclopedia
6. oak tree: Rhymezone
7. Oak-tree: Dictionary of Phrase and Fable (1898)
8. oak tree: FreeDictionary.org
9. oak tree: Mnemonic Dictionary
10. oak tree: TheFreeDictionary.com

Computing (1 matching dictionary)

11. oak tree: Encyclopedia

Medicine (1 matching dictionary)

12. oak tree: Medical dictionary

Miscellaneous (2 matching dictionaries)

13. Brilliant Dream Dictionary (No longer online)
14. oak tree: Idioms

Slang (1 matching dictionary)

15. Oak Tree: Urban Dictionary

(Note: See oak_trees as well.)

Definitions from Wiktionary (oak tree) ▸ noun:  A tree of the genus Quercus, bearing acorns and having lobed leaves. Similar: oak, oaktree, oakling, bur oak, white oak, red oak, pin oak, post oak, oakleaf, acorn, more... Opposite: birch tree, maple tree, pine tree, willow tree Phrases: Tie a Yellow Ribbon Round the Ole Oak Tree, An Oak Tree, potential oak tree, more... Adjectives: oak, hardwood, cork, mahogany, cedared, teak, bamboo, linden, poplared, yew, fir ▸ Words similar to oak tree ▸ Usage examples for oak tree ▸ Idioms related to oak tree ▸ Wikipedia articles (New!) ▸ Words that often appear near oak tree ▸ Rhymes of oak tree ▸ Invented words related to oak tree