American English

Definition of spy noun from the Oxford Advanced American Dictionary

 

spy

 noun
noun
NAmE//spaɪ//
 
(pl. spies)
 
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a person who tries to get secret information about another country, organization, or person, especially someone who is employed by a government or the police He was denounced as a foreign spy. a police spy a spy plane/satellite (= used to watch the activities of the enemy) Video spy cameras are being used in public places.
See the Oxford Advanced Learner's Dictionary entry: spy