The definition of a finder is a person or thing that discovers or locates.
A person, as a member of a labor union on strike, stationed outside a factory, store, or public building, often carrying a sign, to demonstrate opposition to certain views or practices, keep strikebreakers from entering, or dissuade people from buying
One who keeps watch.
a person employed to keep watch for some anticipated event
One that keeps guard; a sentry.
(Uncountable) Sentry duty; time spent being a sentry.
The members of a ship's crew on duty during a specific watch.
(Informal) An individual; a person:
Find another word for spotter. In this page you can discover 12 synonyms, antonyms, idiomatic expressions, and related words for spotter, like: finder, picket, discoverer, lookout, lookout-man, sentinel, sentry, watch, scout, twitcher and spotters.