1. to be mean to someone:
to not be nice to a person
- She is mean to me.
- He is often mean to his employees. He is not a nice boss.
2. used to do something:
did something in the past but now do not do it
- I used to play basketball every weekend, but these days I can't play because I hurt my knee.
- He used to eat a lot of hamburgers, but now he is trying to be healthy, so he only eats a hamburger once a month.