We found 13 dictionaries that define the word barking up the wrong tree:

General (8 matching dictionaries)

1. barking up the wrong tree: Merriam-Webster
2. barking up the wrong tree: Wiktionary
3. Barking Up the Wrong Tree, Barking up the wrong tree: Wikipedia, the Free Encyclopedia
4. Barking Up The Wrong Tree, Barking Up The Wrong Tree: A to Z list of the most popular idioms
5. Barking Up the Wrong Tree: TheFreeDictionary.com
6. Barking up the wrong tree: Phrase Finder

Computing (1 matching dictionary)

7. Barking Up the Wrong Tree: Encyclopedia

Medicine (1 matching dictionary)

8. Barking Up the Wrong Tree: Medical dictionary

Miscellaneous (2 matching dictionaries)

9. AbbreviationZ (No longer online)
10. barking up the wrong tree: Idioms

Slang (1 matching dictionary)

11. barking up the wrong tree: Urban Dictionary

Definitions from Wikipedia (Barking up the wrong tree) ▸ noun:  an idiomatic expression in English, which is used to suggest a mistaken emphasis in a specific context. Phrases: be barking up the wrong tree, more... ▸ Words similar to barking up the wrong tree ▸ Usage examples for barking up the wrong tree ▸ Idioms related to barking up the wrong tree ▸ Wikipedia articles (New!) ▸ Words that often appear near barking up the wrong tree ▸ Rhymes of barking up the wrong tree ▸ Invented words related to barking up the wrong tree