periscope
word
Definition
A periscope is a long tube with mirrors or prisms that lets you see things from a hidden or protected position, such as underwater in a submarine or over a wall.
Usage & Nuances
Used mainly in technical, scientific, or military contexts, especially referring to submarines. Rare in everyday conversation. Collocates with 'submarine', 'tank', or 'use a periscope'.
Example Sentences
The submarine captain looked through the periscope.
basic
A periscope helps people see over high walls.
basic
Children made a periscope in their science class.
basic
If you use a periscope, you can check what’s happening above the water without being seen.
natural
Old war movies often show sailors peeking through a periscope.
natural
When the coast was clear, he lowered the periscope and gave the all clear.
natural