spot‧ter /ˈspɒtə $ ˈspɑːtər/ noun [countable]

1. bird/train etc spotter British English someone who spends time watching birds, trains etc for pleasure and writes down the things that they see

2. someone whose job is to look for or notice a particular type of thing:
Football clubs send spotters to look for young talent.
weather spotter American English

[TahlilGaran] Dictionary of Contemporary English ▲