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spotter

American  
[spot-er] / ˈspɒt ər /

noun

  1. a person employed to remove spots from clothing, especially at a dry-cleaning establishment.

  2. (in civil defense) a civilian who watches for enemy airplanes.

  3. Informal. a person employed to watch the activity and behavior of others, especially employees, as for evidence of dishonesty.

  4. Military. an observer at a forward position who singles out targets for gunners.

  5. a person or thing that spots.

  6. (in small-arms practice firing) a small black disk attached to the target to make more prominent the places where a bullet has hit.

  7. an assistant to a sportscaster who provides the names of the players chiefly involved in each play of a game, especially a football game.

  8. Gymnastics, Tumbling. a person who is stationed in the most effective place to guard against an injury to a performer in the act of executing a maneuver.


spotter British  
/ ˈspɒtə /

noun

    1. a person or thing that watches or observes

    2. ( as modifier )

      a spotter plane

  1. a person who makes a hobby of watching for and noting numbers or types of trains, buses, etc

    a train spotter

  2. military a person who orders or advises adjustment of fire on a target by observations

  3. a person, esp one engaged in civil defence, who watches for enemy aircraft

  4. informal an employee assigned to spy on his colleagues in order to check on their honesty

  5. films

    1. a person who checks against irregularities and inconsistencies

    2. a person who searches for new material, performers, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of spotter

First recorded in 1605–15; spot + -er 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Looking down at her chief executive, who was stationed nearby as a spotter, she called out: “Josep Maria, don’t let me fall!”

From The Wall Street Journal • Apr. 14, 2026

The macro and thematic equity research group was founded by investor and trend spotter James van Geelen, who identified AI as a game changer in 2022 and spotted diet drugs early in 2023.

From MarketWatch • Feb. 12, 2026

The surge of immigration detention flights at Minneapolis-Saint Paul airport spurred plane spotter Nick Benson to shift from tracking rare and unusual aircraft to cataloging the removal of detainees from Minnesota.

From Barron's • Jan. 29, 2026

Towards the front of the train, her father, John, acted as a spotter, giving Edwards a brief warning of upcoming photo opportunities.

From BBC • Sep. 25, 2024

She’s an aerialist and she got the straight scoop from a good authority—her spotter heard Uncle Al and the advance man exchanging heated words outside the big top.

From "Water for Elephants" by Sara Gruen

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