SPY

vt to discover by close search or examination.

2. spy ·noun one who keeps a constant watch of the conduct of others.

3. spy ·vi to search narrowly; to scrutinize.

4. spy ·vt to explore; to view; inspect; and examine secretly, as a country;

— usually with out.

5. spy ·vt to gain sight of; to discover at a distance, or in a state of concealment; to espy; to see.

6. spy ·noun a person sent secretly into an enemy's camp, territory, or fortifications, to inspect his works, ascertain his strength, movements, or designs, and to communicate such intelligence to the proper officer.