有ゆう線せん電でん信しん

noun

wire telegraph

Refers to telegraph communication using physical wires, as opposed to wireless telegraphy. Technical and somewhat historical term.

• 有ゆう線せん電でん信しんは19世せい紀きに広ひろく使つかわれた通つう信しん手しゅ段だんだ。

  Wire telegraphy was a widely used means of communication in the 19th century.