# trunk line

> English word · Noun

## Definitions
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.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/trunk-line