- 1[countable, uncountable] the act of going to different parts of a building, an area, etc. to make sure that there is no trouble or crime Security guards make regular patrols at night. a police car on patrol
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- 2[countable] a group of soldiers, vehicles, etc. that patrol an area a naval/police patrol a patrol car/boat
- 3a group of about six Boy Scouts or Girl Scouts that forms part of a larger group
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