oi

interjection

1. Said to get someone's attention; hey.

- Oi, you with the red hat – stop doing that!

2. A protest or reprimand.

- Oi! Stop that!

3. An expression of surprise.

- Oi! This is new!

4. An informal greeting, similar to hi.

- Oi! How's it going?

5. Alternative spelling of oy

noun

1. (Britain, sometimes capitalized) A working-class punk rock subgenre of the 1970s, sometimes associated with racism.