kick in

Meanings

1. To kick; to collapse or break by kicking.
2. To kick or strike so as to cause the object struck to collapse or fall inwards.
3. To kick or strike (a person); to beat up.
4. To begin, contribute or join in on.
5. To start, connect, or take effect, especially in a sudden way; to begin functioning.
6. To join or begin.
7. To contribute, especially to a collection of money; to hand over.
8. To die; to give up on something.