periscope
pe·ris·cope
noun
1.
an optical instrument that provides a view of an otherwise obstructed field
Origin
Formed in English from peri- + -scope.
Related words
Broader terms
Parts
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.