Search Result for "surveillance": 
Wordnet 3.0

NOUN (1)

1. close observation of a person or group (usually by the police); 



The Collaborative International Dictionary of English v.0.48:

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]


WordNet (r) 3.0 (2006):

surveillance
    n 1: close observation of a person or group (usually by the
         police)