Use It to See Across Trenches or in a Submarine

This page is the CodyCross answer for the clue below from Paris, Group 247, Puzzle 5 (La Closerie Des Lilas).

Question is: Use It to See Across Trenches or in a Submarine

and the answer is: PERISCOPE

Word Meaning:

PERISCOPE — A form of viewing device that allows the viewer to see things at a different height level and usually with minimal visibility.

Definitions from Wiktionary.

Use it to see across trenches or in a submarine — CodyCross Answer | CodyCross Solutions