Meaning of “my” - Learner’s Dictionary

my

determiner us uk /maɪ/
One of my buttons is loose.I'll pop into the supermarket on my way home.I haven't prepared my speech yet.The rain soaked my clothes.She keeps looking in my direction.

A1 belonging to or relating to the person who is speaking or writing:

Tom's my older son.
It's not my fault.
My house is near the station.

(Definition of “my” from the Cambridge Learner’s Dictionary © Cambridge University Press)