狼ろう火か

noun

signal fire; beacon

Historical or literary term for a fire used as a signal, especially in military or warning contexts.

• 昔むかし、敵てきの襲しゅう来らいを知しらせるために山やまの上うえで狼ろう火かを焚たいた。

  Long ago, they lit signal fires on mountains to warn of enemy attacks.