ケーサツ
Meanings
Noun
1. police
There is nothing left to do but leave it to the police.
2. police officer
Two police officers came to the house.
3. police station
If you were attacked, you should go to the police station.
Colloquialism
4. self-appointed enforcer (of a rule, standard, etc.); busybody; vigilante; gatekeeper
There are lots of grammar police on the internet.
Pitch accent
ケ
ーサツ