Definition of spotter in US English:

spotter

noun

  • 1An aviator or aircraft employed in locating or observing enemy positions.

    as modifier ‘spotter planes’
    • ‘Sequences are shown featuring artillery attack on enemy positions directed by a circling spotter plane.’
    1. 1.1British A person who looks for or observes a particular thing as a hobby or job.
      ‘plane-spotters’
    2. 1.2North American A person who observes weather patterns on behalf of an organization.
      ‘the National Weather Service said a spotter had called in to report a tornado touching the ground near Somonauk’
    3. 1.3 A person who observes or assists a gymnast or weightlifter during a performance or practice in order to minimize the chance of accidents or injuries.
      • ‘We had spotters when we played on the rock-climbing wall and we practiced falling off stilts in a way that would lessen the impact on our bodies.’
    4. 1.4 A member of an auto racing team who sits above the track and communicates with the driver by radio about what is happening along the course.
      ‘NASCAR mandated that spotters had to be positioned above the grandstands during practices’
    5. 1.5US informal A person employed by a company or business to keep watch on employees or customers.

Pronunciation

spotter

/ˈspädər//ˈspɑdər/