kick in
Pronunciation:
verb
Definitions
To kick or strike so as to cause the object struck to collapse or fall inwards.
Example: Upon hearing residents in the burning house, the passerby kicked in the front door and yelled to those inside.
To start, connect, or take effect, especially in a sudden way.
Example: I took my medication an hour ago, and it hasn't kicked in yet.
To contribute, especially to a collection of money.
Example: For the year-end party, we're asking each employee to kick in twenty dollars.