natty

Short definition from Wiktionary

Adjective

1. 1
   Smart and fashionable.
2. 2
   Knotty.
3. 3
   Natural, as opposed to steroid enhanced.
4. 4
   National.

Noun

1. 1
   Someone whose muscle gains are natural and not aided by the use of steroids.
2. 2
   A national championship.

Proper noun

1. 1
   Natural beer, an economy brand of pale lager.
2. 2
   A diminutive of the female given name Natalie.