gnash 

An adjective used to describe something cool, awesome, excellent, outstanding, or crazy. It is definitely a superlative adjective, only used when the subject is extremely good or amazingly superior, or there is much energy involved in the speaker's passion about the subject or the excellence of the subject itself.

Usually preceded by "fucking"

I went to that DMST show last night, they were fucking gnash!

You got us there in no time, driving fuckin' gnash like that!

The protest was fuckin' gnash man, even fucking Jane Fonda showed up!

gnash by fuckdc June 4, 2007

Gnash 

A backward song with other meanings or to send cryptic messages.

2pac uses gnash to tell a different stories in many songs. Example, Dear Mama reversed.

Gnash by Kraaazzy March 1, 2009

Gnash 

A rAndOm WorD we SAW while looking for nun porn.

I may like the gnash!

Gnash by NuNs gone wild February 12, 2004

gnash 

to have sexual intercourse

We just gnashed.

gnash by Anonymous June 3, 2003

gnash 

funniest guy in Ogrish.com

I went in to ogrish.com to see dead people but just ended up looking 4 gnashss jokes

gnash by Mary lou February 18, 2004

gnash 

When you joke or take the piss out of somebody, and they respond in an attempt to defend themselves

Otherwise known as a "nibble" or "biting"

Seb: "Jamie you're a ginger twat"
Jamie: "Well you've got no mates"

In this instance, Jamie is gnashing to Seb's insult

Nibble Bite

gnash by sh123 January 22, 2017

gnash 

Meaning 'shit'. Made up by two girls that had nothing better to do with their spare time than to sit and make up meaningless words and piss of other people because they didn't know what the gnash we were saying.

Oh gnash! You lardass..

gnash by Kaytee December 16, 2004