1. A guard who keeps watch
   "The night watcher patrolled the warehouse grounds";
   - security guard
    
2. A close observer; someone who looks at something (such as an exhibition of some kind)
   "sky watchers discovered a new star";
   - spectator, witness, viewer, looker
    
3. A person who keeps a devotional vigil by a sick bed or by a dead body
   "The watcher stayed by her grandmother's bedside throughout the night"

Derived forms: watchers

Type of: actor, beholder, doer, guard, observer, perceiver, percipient, worker

Part of: private security force, security force

Encyclopedia: Watcher