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
laugh all the way to the bank
to make money in a way that other people think is impossible
I was laughing all the way to the bank with the money that I made from selling drinks at the sports stadium.