dictionary.pt
periscope
nounmasculinetechnicaluncommon/pɨ.ɾiʃ.ˈkɔ.pju/pe·ris·có·pi·o
Definition
1An optical instrument that allows observation of objects or scenes located above an obstacle or outside the direct line of sight, composed of a system of mirrors or prisms.
Usage examples
“The submarine commander observed the surface through the periscope.”
“Battle tanks also use periscopes.”
Common combinations
submarine periscopetank periscopeperiscope tube