Dictionary definition for: Spy
1. (n) (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
3. (n) a secret watcher; someone who secretly watches other people; "my spies tell me that you had a good time last night"
4. (v) watch, observe, or inquire secretly
5. (v) secretly collect sensitive or classified information; engage in espionage; "spy for the Russians"
WordNet 2.1 Copyright Princeton University. All rights reserved.