Definition of trunk line in English:

trunk line

noun

  • A main line of a railroad, telephone system, or other network.

    • ‘It was the junction of the main trunk line to New Plymouth, to Auckland and Wellington.’
    • ‘Once we left the trunk line and entered an unpaved road, there were hardly any vehicles.’
    • ‘Mexico has no trunk line from the U.S. border to Mexico City, rail line.’
    • ‘This was the key trunk line between Philadelphia and Pittsburgh, which also linked those cities to larger rural markets.’
    • ‘Brave members of the audience are sitting in freight cars that look as if they are about to head off down the main trunk line at any moment.’

Pronunciation

trunk line

/ˈtrəNGk ˌlīn/