spy

n : a secret agent hired by a state to obtain (military)

information about its enemies [syn: {undercover agent}]

v 1: catch sight of [syn: {descry}, {spot}, {espy}]

2: watch, observe, or inquire secretly [syn: {stag}, {snoop}]

3: secretly collect sensitive or classified information; engage

in espionage; "spy for the Russians"