n.
1.(military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
2.a secret watcher spy v.
1.catch sight of
2.watch, observe, or inquire secretly
3.secretly collect sensitive or classified information
Idiom of the Day
whistle in the dark
to try to stay brave and forget one`s fear
The man felt very frightened and began to whistle in the dark. This helped to calm him down.