spy
[ˈspaɪ]
1
spy
noun
- a person who tries secretly to get information about a country or organization for another country or organization —often used before another noun
- someone who secretly watches the movement or actions of other people
2
spy
verb
- to try secretly to get information about a country, organization, etc. : to act as a spy —often + on
- to see or notice (someone or something)