trunk line

Noun

 * 1)  A main railway line which usually forms the backbone of a rail network.
 * 2) The main line of a canal, from which other sections diverge.
 * 3) A main telephone line.
 * 1) The main line of a canal, from which other sections diverge.
 * 2) A main telephone line.

Translations

 * Danish: stambane
 * Finnish: runkorata
 * Norwegian:
 * Bokmål: stambane
 * Nynorsk: stambane