Spotter

/spˈɒtɐ/

/ˈspɑtɝ/

Spotter

someone who is the first to observe something

synonyms : discoverer

a worker employed to apply spots (as markers or identifiers)

a worker employed at a dry-cleaning establishment to remove spots

a person employed to keep watch for some anticipated event

synonyms : lookout

a tool used by artists to contain and localize materials applied to a surface

Examples

1. Suddenly, well in advance of the cargo ships, a spotter sights an undersea raider.

2. Storm spotters serve a very valuable purpose.

3. The spotter sees an empty canoe on the riverbank.

4. You need a spotter.