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English definition of “spy”

spy

noun [C] uk   /spaɪ/ us  

spy

verb uk   /spaɪ/ us  

spy verb (FIND SECRETS)

C1 [I] to secretly collect and report information about the activities of another country or organization: He was arrested for spying on missile sites. spy out informal to get knowledge secretly, especially of a place: I generally like to spy out restaurants before I go to eat in them.

spy verb (SEE)

[T] old-fashioned or humorous to see or notice someone or something usually when it involves looking hard: I think I've just spied Andrew in the crowd.
Phrasal verbs
(Definition of spy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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