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1 definition by ChicagoMel

 
1.
(Highlander) A secret society of men and women who observe and record the lives of immortals, but never interfere. Most of the time anyway. They are ID'd by their wrist tattoos. Joe Dawson was the most famous, as Duncan MacLeod's Watcher. Sometimes they go rogue and start hunting immortals, and then they are called Hunters.
Joe was the only really cool Watcher in this 'verse
by ChicagoMel December 26, 2009