RhymeZone: watcher definitions

Definitions of watcher:

noun: a person who keeps a devotional vigil by a sick bed or by a dead body
noun: a guard who keeps watch
noun: a close observer; someone who looks at something (such as an exhibition of some kind)
Example: "Sky watchers discovered a new star"
name: A surname (very rare: popularity rank in the U.S.: #48717)