surveillance

  • 131surveillance — /sarvey(l)ans/ Oversight, superintendence, supervision. Police investigative technique involving visual or electronic observation or listening directed at a person or place (e.g., stakeout, tailing of suspects, wiretapping). Its objective is to… …

    Black's law dictionary

  • 132surveillance — Oversight. Observation, especially of a person suspected of criminal activities …

    Ballentine's law dictionary