Definiciones
1.NounA going of the rounds along the chain of sentinels and between the posts, by a guard, usually consisting of three or four men, to insure greater security from attacks on the outposts."Four members of the squadron were on patrol."
2.NounA movement, by a small body of troops beyond the line of outposts, to explore the country and gain intelligence of the enemy's whereabouts.
3.NounThe guards who go the rounds for observation; a detachment whose duty it is to patrol.
4.NounThe largest division of officers within a police department or sheriff's office, whose assignment is to patrol and respond to calls for service.
5.NounAny perambulation of a particular line or district to guard it; also, the people thus guarding."a customs patrol; a fire patrol"
6.NounA unit of a troop, usually defined by certain ranks or age groups within the troop, and ideally comprised of six to eight members.
7.VerbTo go the rounds along a chain of sentinels; to traverse a police district or beat.
8.VerbTo go the rounds of, as a sentry, guard, or policeman"to patrol a frontier; to patrol a beat"