spotter

Noun

spotter (plural spotters)

1. A person who observes something.
2. A member of a sniper team who in addition to this function is responsible for providing additional information about targets from a different point of view.
3. One who supervises a person performing an activity, in order to help them should they be unable to complete it.
   • Due to a spotter's lack of action in holding the weight when a lifter lost her balance, the lifter badly pulled some muscles.1981 December 12, Melissa Wills, “Moving Metal”, in Gay Community News, volume 9, number 21, page 10
4. (US) A person who gives directions for a crane or vehicle (that is challenging to navigate) from a different point of view to the moved load.

   Synonyms:

   banksman, dogman, lookout, observer, signalman

5. Dolphins of the genus Stenella, and specifically Stenella attenuata distinguished from the streaker (Stenella coeruleoalba) and the spinner (Stenella longirostris).

   Synonyms:

   spotted dolphin

6. A team member responsible for communication with the driver to keep them up-to-date about on-track events, such as other nearby cars.

   Synonyms:

   observer

7. A person employed to assist a sports presenter by identifying the players or events during a game.