Definition of people-watcher in US English:

people-watcher

noun

  • See people-watch

    • ‘Rome is a city for walkers, wanderers, people-watchers and lovers.’
    • ‘I know which places to avoid if I'm in a hurry but generally I don't mind standing in line as I'm an avid people-watcher.’
    • ‘If you are a people watcher they have booths and tables right on the street.’
    • ‘The view is of the fairly unattractive street, but if you are a people-watcher, there is no shortage of passers-by.’
    • ‘Bar work is heaven for people-watchers.’