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trunk line

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noun
a major long-distance transportation line.
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Origin of trunk line

First recorded in 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use trunk line in a sentence

British Dictionary definitions for trunk line

trunk line

noun
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
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