from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Nude.
- adj. In a natural state: an au naturel hairstyle.
- adj. Cooked simply.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In the nude: in the naked state.
- adv. Naturally.
- adv. In the plainest or simplest manner.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. completely unclothed
French : au, in the + naturel, natural (state).(American Heritage® Dictionary of the English Language, Fourth Edition)
Borrowing from French au naturel (literally "in the natural") (Wiktionary)