kick in
US /kɪk ɪn/
UK /kɪk ɪn/
1.
to start to have an effect or to become active
:
•
The medication should kick in within 30 minutes.
•
That's when the panic really started to kick in.
2.
to contribute money or effort to something
:
•
Everyone needs to kick in some money for the party.
•
The whole team had to kick in to finish the project on time.