# catback

> English word · Noun

## Definitions
1. The totality of components which exhaust gases flow through after exiting a vehicle's catalytic converter.
2. The back of a cat (for riding upon).

## Etymology
From cat + back, sense 2 (the back of a cat, for riding upon) is modelled on horseback.

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