policing
US /pəˈliː.sɪŋ/
UK /pəˈliː.sɪŋ/

1.
the enforcement of law and order by a police force
:
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Community policing aims to build trust between officers and residents.
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The city has increased its budget for urban policing.
2.
the activity of a person or group in enforcing regulations or maintaining order
:
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The self-policing of the industry has been criticized for its lack of effectiveness.
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The teacher is responsible for the policing of the classroom rules.