Definition of patrol
(Entry 1 of 2)
1a
: the action of traversing a district or beat or of going the rounds along a chain of guards for observation or the maintenance of security
b
: the person performing such an action
c
: a unit of persons or vehicles employed for reconnaissance, security, or combat
2
: a subdivision of a Boy Scout troop or Girl Scout troop
patrol
verb
patrolled; patrolling
Definition of patrol (Entry 2 of 2)
: to carry out a patrol
: to carry out a patrol of
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Merriam-Webster unabridged
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Time Traveler for patrol
The first known use of patrol was in 1648
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