# signal box

> English word · Noun

## Definitions
1. A building, typically adjacent to or spanning a railway line, from where signals, points and (sometimes) level crossings are controlled.
2. The alarm-box of a police or fire alarm system.

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