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English definition of “spy”

spy

noun [C]  /spɑɪ/ (slang spook) us  

spy noun [C] (PERSON)

a person employed by a country or organization to secretly gather and report information about another country or organization

spy

verb  /spɑɪ/ us  

spy verb (SEE)

[T] to see or notice someone or something: He kept on their trail until he spied firelight from a camp nestled in the rocks.

spy verb (GATHER INFORMATION)

[I] to secretly gather and report information about another country or organization: Bazoft confessed on television that he spied for Israel.
(Definition of spy from the Cambridge Academic Content Dictionary © Cambridge University Press)
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