# sidecar

> English word · Noun · IPA /ˈsaɪdkɑɹ/ · frequency rank #50,800

## Definitions
1. A one-wheeled attachment to the side of a motorcycle to allow for a separate seat for a passenger or cargo space.
2. A cocktail made with cognac (or brandy), triple sec liqueur, and lemon juice.
3. A software component that runs in a separate process from the rest of the software, to provide isolation and encapsulation.

## Etymology
From side + car.

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