地ち下か鉄てつ道どう

noun

subway; metro; underground railway

Refers to an underground railway system. Often interchangeable with 地下鉄 (ちかてつ), but 地下鉄道 can sound slightly more formal or technical.

See also: 地下鉄

• 東とう京きょうの地ち下か鉄てつ道どうはとても便べん利りです。

  Tokyo's subway system is very convenient.