semaphore
[ sem-uh-fawr ]
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Part of Speechnoun
Origin + Etymology
Early 19th century; Frenchfrom French sémaphore, formed irregularly from Greek sēma ‘sign’ + -phoros
Synonyms
  • warn
  • flag
  • gesture
Antonyms
  • unavailable
Definition
an apparatus for conveying information by means of visual signals, as a light whose position may be changed
Example
The lighthouse served as a semaphore to passing ships to be aware of the coming shore.
Usage Over Time
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