per‧i‧scope /ˈperəskəʊp, ˈperɪskəʊp $ -skoʊp/
noun [countable][
Date: 1800-1900;
Origin: peri- (from Greek; PERICARDIUM) + Greek skopos 'look']
a long tube with mirrors fitted in it, used to look over the top of something, especially to see out of a
submarine [TahlilGaran] Dictionary of Contemporary English ▲