to gain sight of; to discover at a distance, or in a state of concealment; to espy; to see.-to discover by close search or examination.-to explore; to view; inspect; and examine secretly, as a country; -- usually with out.-to search narrowly; to scrutinize.-one who keeps a constant watch of the conduct of others.-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.