鳩きゅう信しん

noun

carrier-pigeon communication

Refers to sending messages via carrier pigeon; a historical or specialized term.

• 戦せん時じ中ちゅうは鳩きゅう信しんが重じゅう要ような通つう信しん手しゅ段だんだった。

  During the war, carrier-pigeon communication was an important means of communication.