my
determiner
1. Belonging to me.
- I can't find my book.
2. Associated with me.
- My seat at the restaurant was uncomfortable.
- Don't you know my name?
- I recognised him because he had attended my school.
3. Related to me.
- My parents won't let me go out tonight.
4. In my possession.
- I have to take my books back to the library soon.
interjection
1. (dated) Used to express surprise, shock or amazement.
- My, what big teeth you have!