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semaphore

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semaphore

Main Entry:: ¹sem·a·phore
Pronunciation:: \ˈse-mə-ˌfȯr\
Function:: noun
Etymology:: Greek sēma sign, signal + International Scientific Vocabulary -phore
Date:: 1816

1 : an apparatus for visual signaling (as by the position of one or more movable arms) 2 : a system of visual signaling by two flags held one in each hand

[semaphore illustration]

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