A spying glass; also a looking-glass. Track up the dancers, and pike with the peeper; whip up stairs, and run off with the looking-glass. CANT.
·noun The eye; as, to close the peepers. II. Peeper ·noun One who peeps; a prying person; a spy. I...
Webster's Dictionary of the English Language
A person having but one eye. ...
Dictionary of The Vulgar Tongue by Francis Grose
A collector of the window tax. ...