NA! 

Greek sign language: Tossing 5 fingers with a twist and flick of the wrist.
a non verbal and offensive way of saying go fuck yourself

NA! re malaka aie ha sou apo tho!

NA! by Da Chris November 20, 2004

NA! 

A verbal expression meaning "No" with a hint of "do you think I'm fuckin' stupid". This word is usually used abruptly by a person.

"NA! I don't get down like dat, yo!"

NA! by Krista Snyder July 1, 2005

na! 

When lifting up a middle finger, Hong Kong Cantonese tends to utter the word 'Na' or 'Naa' together. Its origin is unknown, but doing middle-finger without saying "Na" is like a woman turning pale.

1. Naa!! (with middle-finger)

na! by Yau February 2, 2005

NA

Narcotics Anonymous- A 12 step program for recovering drug addicts wishing to seek help and support from their peers while getting clean
in the literature it states that nothing cane outdo the theraputic value of one addict helping another addict

"Hey man i cant quite doin drugs the doctor says just to stop"
"Dude its not that easy you need to go to NA"

NA by D diddy April 16, 2006

na

word used in many indian languages to just end a sentence,,specially convincing..similar to la in canthonese.. You can add many a's after 'n' like naaa or naaaaa

A- please do it for me..
B- ill think about it..
A- do it na....

na by Ricky x July 3, 2010

Na

Sodium, on the periodic table of elements.

NaCl is sodium choride, the tasty, grain-like substance you put on french fries, otherwise known as table salt.

Na by Host3ntropy June 29, 2005

NA

Narcotics anonymous. Complete with group meetings.

Matt:I'm Matt and I'm addicted to narcotics.
Group: Hello Matt.

NA by herbert April 15, 2005