# dead man's switch

> English word · Noun

## Definitions
1. A switch that ensures a fail-safe condition by automatically triggering an action (for instance, to stop a machine or vehicle) if a specified input from the operator is not made or is altered.

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