- a major long-distance transportation line.
- trunk(def 8).
Origin of trunk line
First recorded in 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for trunk line
The problem of that Eastern road of a dozen years ago is to-day that of virtually every trunk-line of the Northeast.Our Railroads To-Morrow
National participation, however, should be confined to trunk-line systems.State of the Union Addresses of Calvin Coolidge
Before the panic of 1857 the trunk-line railways had completed their net of tracks between the Mississippi and tidewater.The New Nation
Frederic L. Paxson
It now looks as if they were the only way through for a majority of the trunk-line railroads.The Railroad Problem
As far back as the early fifties this great work of rebuilding the trunk-line railroads was begun.The Modern Railroad
- a direct link between two telephone exchanges or switchboards that are a considerable distance apart
- the main route or routes on a railway
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012