Longman Dictionary of Contemporary English homepage

police

2 verb
     
Related topics: Law
police2 [transitive]
1 to keep control over a particular area in order to make sure that laws are obeyed and that people and property are protected, using a police or military force:
The army was brought in to police the city centre.
2SCL to control a particular activity or industry by making sure that people follow the correct rules for what they do:
The agency was set up to police the nuclear power industry.

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