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watch

• Noun

  1. A portable or wearable timepiece.
  2. The act of guarding and observing someone or something.
  3. A particular time period when guarding is kept.
  4. A period of wakefulness between the two sleeps of a biphasic sleep pattern (the dead sleep or first sleep and morning sleep or second sleep): the first waking.
  5. A person or group of people who guard.
  6. The post or office of a watchman; also, the place where a watchman is posted, or where a guard is kept.
  7. A group of sailors and officers aboard a ship or shore station with a common period of duty: starboard watch, port watch.
  8. A period of time on duty, usually four hours in length; the officers and crew who tend the working of a vessel during the same watch. (FM 55–501).
  9. The act of seeing, or viewing, for a period of time.

• Verb