observer

  1. Noun.  One who makes observations, monitors or takes notice.
  2. Noun.  One who adheres or follows laws, guidelines, etc.
  3. Noun.  A person sent as a representative, to a meeting or other function to monitor but not to participate.
  4. Noun.  (military) A crew member on an aircraft who makes observations of enemy positions or aircraft.
  5. Noun.  (military) A sentry etc. manning an observation post.

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This entry was last updated on RefTopia from its source on 3/20/2012.