Spy | Mean of spy in English Dictionary

/ˈspaɪ/

• Noun
• a person who tries secretly to get information about a country or organization for another country or organization
1. He was a spy for the CIA.
2. a Cold War spy
3. a spy novel/thriller [=a novel/thriller about spies]
4. a spy camera/plane [=a camera/plane used for spying]
• someone who secretly watches the movement or actions of other people
1. My coworker is a spy for the boss.
2. the neighborhood spy
• Verb
• to try secretly to get information about a country, organization, etc.
1. They were accused of spying for a foreign government.
2. They were accused of spying on a rival company.

• to see or notice (someone or something)
1. She spied [=caught sight of] a friend in the crowd.
• to watch (someone) secretly
1. He spies on his neighbors.
2. Have you been spying on me?
• to notice, find, or learn about (something) by looking often in a secret way
1. They were trying to spy out the enemy's position.
• to find or get more information about a situation secretly and before making a decision