repeater

 
Pronunciation: /rɪˈpiːtə/

noun

  • a person or thing that repeats something, in particular:
  • a firearm which fires several shots without reloading: a fast-fire repeater
  • a watch or clock which repeats its last strike when required.
  • a device for the automatic retransmission or amplification of an electrically transmitted message.
  • a railway signal indicating the state of another that is out of sight.