# lab rat

> English word · Noun

## Definitions
1. A student or employee who spends a great deal of time working in a laboratory.
2. A person or group used as the subject of an experiment or test, especially unwillingly or unwittingly.

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