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English definition of “patrol”

patrol

verb [I, T]     /pəˈtrəʊl/ (present participle patrolling, past tense and past participle patrolled)
to look for trouble or danger in an area or around a building: Police patrol the streets night and day.Defending and protectingBacking, supporting and defendingPreserving and savingThe police generally
(Definition of patrol verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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