# touch off

> English word · Verb

## Definitions
1. To start (something); to set off traps; especially used for unstable situations that may magnify if disturbed.
2. To cause a fire to start.
3. To establish a reference coordinate or datum, by moving the tool head to just touch the workpiece or machine bed.

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