伝でん声せい器き

noun

speaking tube

A simple voice-transmission device, typically a tube or pipe used for communication between rooms or on ships. The term is somewhat dated; modern intercoms have largely replaced it.

• 昔むかしの船ふねでは、伝でん声せい器きで機き関かん室しつと連れん絡らくを取とっていた。

  On old ships, they used a speaking tube to communicate with the engine room.