Definitions from Wiktionary ( )

▸ noun:  (military) A 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.
▸ noun:  (military) A movement, by a small body of troops beyond the line of outposts, to explore the country and gain intelligence of the enemy's whereabouts.
▸ noun:  (military) The guards who go the rounds for observation; a detachment whose duty it is to patrol.
▸ noun:  (law enforcement) The largest division of officers within a police department or sheriff's office, whose assignment is to patrol and respond to calls for service.
▸ noun:  Any perambulation of a particular line or district to guard it; also, the people thus guarding.
▸ noun:  (scouting) A unit of a troop, usually defined by certain ranks or age groups within the troop, and ideally comprised of six to eight members.
▸ verb:  (intransitive) To go the rounds along a chain of sentinels; to traverse a police district or beat.
▸ verb:  (transitive) To go the rounds of, as a sentry, guard, or policeman

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