We found 9 dictionaries that define the word you know what:

General (6 matching dictionaries)

1. you-know-what, you know what: Merriam-Webster
2. you know what: Collins English Dictionary
3. You know what: Cambridge Advanced Learner's Dictionary
4. you-know-what, you know what: Wiktionary
5. You Know What, You Know What: Wikipedia, the Free Encyclopedia
6. You Know What, you-know-what: TheFreeDictionary.com

Business (1 matching dictionary)

7. You Know What: Legal dictionary

Miscellaneous (1 matching dictionary)

8. You Know What: Idioms

Slang (1 matching dictionary)

9. you know what: Green’s Dictionary of Slang

Definitions from Wikipedia (You Know What) ▸ noun:  "You Know What" is a song by American singer Avant featuring rapper Lil Wayne. Types: euphemism, slang, vernacular, colloquialism, more... Phrases: you know what i mean, if you know what i mean, Shriek If You Know What I Did Last Friday the 13th, You Don't Know What Love Is, Do You Know What I Mean, more... ▸ Words similar to you know what ▸ Usage examples for you know what ▸ Idioms related to you know what ▸ Wikipedia articles (New!) ▸ Words that often appear near you know what ▸ Rhymes of you know what ▸ Invented words related to you know what