sem‧a‧phore /ˈseməfɔː $ -fɔːr/
noun [uncountable][
Date: 1800-1900;
Language: Greek;
Origin: sema 'sign' + -phoros 'carrying']
a system of sending messages using two flags, which you hold in different positions to represent letters and numbers
[TahlilGaran] Dictionary of Contemporary English ▲