Definition of semaphore signal in English:

semaphore signal

noun

  • 1Semaphore.

  • 2Railways. A signal consisting of a pivoted arm that can be in either of two positions, depending on the message to be conveyed. Now chiefly historical, having been largely replaced by electric colour light signals.

  • 3A signal conveyed by or as by semaphore; specifically each of a set of signals that can be represented by the position of a person's two outstretched arms, typically holding a flag in each.

Origin

Early 19th century. From semaphore + signal.

Pronunciation

semaphore signal

/ˈsɛməfɔː ˌsɪɡnl/