# arrester

> English word · Noun

## Definitions
1. One who places another under arrest.
2. A device that stops or prevents, such as a railway buffer, or a spark arrester that prevents sparks from being released to start fires.

## Etymology
From arrest + -er.

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