We found 19 dictionaries that define the word gnar:

General (16 matching dictionaries)

1. gnar: Merriam-Webster
2. gnar: Oxford Learner's Dictionaries
3. gnar: American Heritage Dictionary of the English Language
4. gnar: Collins English Dictionary
5. Gnar, gnar: Wordnik
6. gnar: Wiktionary
7. gnar: Webster's New World College Dictionary, 4th Ed.
8. gnar: Infoplease Dictionary
9. Gnar, gnar: Dictionary.com
10. Gnar: Wikipedia, the Free Encyclopedia
11. Gnar: Online Plain Text English Dictionary
12. gnar: Webster's Revised Unabridged, 1913 Edition
13. Gnar: AllWords.com Multi-Lingual Dictionary
14. gnar: Webster's 1828 Dictionary
15. gnar: FreeDictionary.org
16. gnar: TheFreeDictionary.com

Medicine (1 matching dictionary)

17. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)

18. GNAR: Acronym Finder

Slang (1 matching dictionary)

19. The Gnar: Urban Dictionary

(Note: See gnarred as well.)

Definitions from Wiktionary (gnar) ▸ verb:  To snarl or growl. ▸ adjective:  (slang, chiefly sports) Gnarly. ▸ noun:  (slang, extreme sports) Snow or an ocean wave. Similar: gnarl, snarl, snar, gurl, groin, growl, yarr, gnag, girn, grill, more... Opposite: smooth, sleek, polished, even Types: gnarly, rad, gnar gnar, gnar gnarly, more... Colors:     charcoal,     forest green,     olive,     teal,     midnight blue, more... ▸ Words similar to gnar ▸ Usage examples for gnar ▸ Idioms related to gnar ▸ Wikipedia articles (New!) ▸ Popular adjectives describing gnar ▸ Popular nouns described by gnar ▸ Words that often appear near gnar ▸ Rhymes of gnar ▸ Invented words related to gnar