1. (slang) contraction of you and are
- Yo a fool.
1. (slang) A greeting similar to hi.
- Yo Paulie! How's it going?
2. (slang) An interjection similar to hey.
- Yo, check this out!
3. (military slang) Present! Here!
- Sergeant: Smith? Private Smith: Yo!
1. abbreviation of year/years old
1. (colloquial) shortened form of your
- Yo sandwich only has bacon in it. Want some ketchup on that?
2. (Baltimore) third-person singular, familiar
- Yo was tuckin' in his shirt! (Stotko and Troyer 2007)