A person who observes or keeps watch over something or someone. The bird watcher spent hours in the forest hoping to spot a rare species.
A person who follows or monitors a particular event, situation, or trend. The market watcher predicted a rise in stock prices due to recent economic developments.
A person who is employed to keep watch over a place or situation, often for security purposes. The night watcher patrolled the premises to ensure everything was secure.
In computing, a program or process that continuously monitors the state of a resource, file, or system event. A file watcher automatically rebuilt the project whenever a source file changed.
A supernatural or celestial being that observes human activity, especially in religious or mythological contexts. Ancient texts describe the Watchers as angels who descended to Earth.