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)
Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "surveillance": accountability, ambuscade, ambush, ambushment, auspices, blind, booby trap, bossing, bugging, care, charge, cloak-and-dagger work, counterespionage, counterintelligence, custodianship, custody, eagle eye, electronic surveillance, espial, espionage, eye, following, guard, guardedness, guardianship, intelligence, intelligence work, intendance, invigilation, jurisdiction, lookout, lurking hole, military intelligence, monitoring, observance, observation, oversight, peeled eye, proctoring, prudence, qui vive, reconnaissance, responsibility, scrutiny, secret police, secret service, shadowing, sharp eye, spying, stakeout, stalking-horse, stewardship, superintendence, supervision, tab, tailing, tout, trailing, trap, vigil, vigilance, wariness, watch, watch and ward, watchful eye, watchfulness, watching, weather eye, wiretap, wiretapping