noun
- an optical instrument with mirrors or prisms that allows observation from a concealed or protected position, especially used in submarines
Usage: nautical; military
Examples
- The submarine captain raised the periscope to scan the surface.
- Through the periscope, they could see enemy ships approaching.
- The periscope allowed the crew to observe without being detected.
- Modern periscopes use advanced optics and digital displays.
- The tank’s periscope gave the driver a view of the battlefield.
- She peered through the periscope to watch the harbor activity.