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.’
trunk line/ˈtrəNGk ˌlīn/
We take a look at several popular, though confusing, punctuation marks.