26984 words

periscope

2 definitions • 2 examples
1
a long, vertical tube containing a set of mirrors that gives you a view of what is above you when you look through the bottom of the tube:

Examples:

Periscopes are used in submarines to allow you to look above the surface of the water.
2
a vertical tube containing mirrors that can give you a view of what is above you when you look through the bottom of the tube:

Examples:

The periscope of the submarine was visible just above the surface of the water.

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