1. An apparatus for visual signaling with lights or mechanically moving arms
   "Before radio communication, ships used semaphore flags to send messages"

1. Convey by semaphore, of information
   "The sailors semaphored the message to the shore"; "He semaphored his distress signal using flags"
    
2. Communicate by or as if by visible signals, especially with arm gestures
   "She semaphored her approval from across the room"

Derived forms: semaphores, semaphoring, semaphored

Type of: apparatus, communicate, intercommunicate, setup, sign, signal, signalise [Brit], signalize

Encyclopedia: Semaphore, South Australia