spotter Meaning, Definition & Usage

1. noun a worker employed at a dry-cleaning establishment to remove spots
   
2. noun a worker employed to apply spots (as markers or identifiers)
   
3. noun a person employed to keep watch for some anticipated event
   lookout; picket; sentry; watch; lookout man; scout; sentinel.
   
4. noun someone who is the first to observe something
   discoverer; finder.
   

WordNet