'Surveillance' definitions:

Definition of 'surveillance'

From: WordNet
noun
Close observation of a person or group (usually by the police)

Definition of 'Surveillance'

From: GCIDE
  • Surveillance \Sur*veil"lance\, n. [F., fr. surveiller to watch over; sur over + veiller to watch, L. vigilare. See Sur-, and Vigil.] Oversight; watch; inspection; supervision. [1913 Webster]
  • That sort of surveillance of which . . . the young have accused the old. --Sir W. Scott. [1913 Webster]