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We found 32 dictionaries with English definitions that include the word ha-ha:
Click on the first link on a line below to go directly to a page where "ha-ha" is defined.

General (26 matching dictionaries)

1. ha-ha: Merriam-Webster.com [home, info]
2. ha-ha: Oxford Dictionaries [home, info]
3. ha-ha, ha-ha: American Heritage Dictionary of the English Language [home, info]
4. ha-ha, ha-ha: Collins English Dictionary [home, info]
5. ha-ha: Vocabulary.com [home, info]
6. HA-HA, Ha-Ha, Ha-ha, ha-ha: Wordnik [home, info]
7. ha-ha: Cambridge Advanced Learner's Dictionary [home, info]
8. ha-ha: Wiktionary [home, info]
9. ha-ha: Webster's New World College Dictionary, 4th Ed. [home, info]
10. ha-ha: Infoplease Dictionary [home, info]
11. Ha-ha, ha-ha: Dictionary.com [home, info]
12. Ha-Ha, Ha-ha: Wikipedia, the Free Encyclopedia [home, info]
13. Ha-ha: Online Plain Text English Dictionary [home, info]
14. ha-ha: Webster's Revised Unabridged, 1913 Edition [home, info]
15. ha-ha: Rhymezone [home, info]
16. Ha-ha: AllWords.com Multi-Lingual Dictionary [home, info]
17. ha-ha: Hutchinson's Dictionary of Difficult Words [home, info]
18. Ha-ha: Dictionary of Phrase and Fable (1898) [home, info]
19. ha-ha: Free Dictionary [home, info]
20. ha-ha: Hutchinson Dictionaries [home, info]
21. ha-ha: Mnemonic Dictionary [home, info]
22. ha-ha: WordNet 1.7 Vocabulary Helper [home, info]
23. ha-ha: LookWAYup Translating Dictionary/Thesaurus [home, info]
24. ha-ha: Dictionary/thesaurus [home, info]
25. Ha-ha: World Wide Words [home, info]
26. ha-ha: Worthless Word For The Day [home, info]

Computing (1 matching dictionary)

27. ha-ha: Encyclopedia [home, info]

Miscellaneous (2 matching dictionaries)

28. HA-HA: Ka-BOOM! Comicbook Words on Historical Principles [home, info]
29. ha-ha: A Word A Day [home, info]

Science (1 matching dictionary)

30. ha-ha: Botanical Terms [home, info]

Slang (1 matching dictionary)

31. ha-ha: Urban Dictionary [home, info]

Tech (1 matching dictionary)

32. Ha-Ha: Urban Conservation Glossary [home, info]

(Note: See ha-has for more definitions.)

Quick definitions from WordNet (ha-ha) ▸ noun:  a ditch with one side being a retaining wall; used to divide lands without defacing the landscape ▸ noun:  a loud laugh that sounds like a horse neighing ▸ Also see ha-has ▸ Words similar to ha-ha ▸ Usage examples for ha-ha ▸ Popular adjectives describing ha-ha ▸ Words that often appear near ha-ha ▸ Rhymes of ha-ha ▸ Invented words related to ha-ha