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semaphore

3 ENTRIES FOUND:

1sem·a·phore

noun \ˈse-mə-ˌfr\

Definition of SEMAPHORE

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

Illustration of SEMAPHORE

Origin of SEMAPHORE

Greek sēma sign, signal + International Scientific Vocabulary -phore
First Known Use: 1816

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