Pa·trol v. i. [imp. & p. p. Patrolled p. pr. & vb. n. Patrolling.] To go the rounds along a chain of sentinels; to traverse a police district or beat.
patrol
n 1: a detachment used for security or reconnaissance
2: the activity of going around or through an area at regular
intervals for security purposes
3: a group that goes through a region at regular intervals for
the purpose of security
v : maintain the security of by carrying out a control [syn: police]
[also: patrolling, patrolled]