号ごう音おん

noun

signal sound; starting gun signal

Refers to a sound used as a signal, especially the starting gun in races or similar alert sounds.

• 号ごう音おんが鳴なると、選せん手しゅたちは一いっ斉せいに走はしり出だした。

  When the starting signal sounded, the athletes all started running at once.