A prefix applied to various styles of music since the mid or late 1990s. Especially found in "nu-metal" and "nu-rock": KoRn, Staind, Linkin Park and Disturbed are examples.
From a phonetic/perverted spelling of "new".
by LudwigVan December 19, 2003
(n.) a term of endearment similar to honey, baby, sweetie, or lovebug
You are the cutest little nu-nu I've ever seen.
by calvertcountynu-nu February 2, 2011
Female private part... Vagina
A brazilian is necessary before wearing a nu-nu suit.
by Fisher March 24, 2004
a gun
from re-akshon by killa mike
i pulled that nu nu out
by Spinbad May 21, 2004
Alt spelling of new.

On the internet it became a meme when it was attached to a specific genre of music, i.e. nu metal. Nu, in it's more specialized meaning, denotes the re-envisioning of some art (music, film, fiction, etc.) with specific attention to pop-culture references and image as part of the creative process and the whole package.
Korn, Limp Biscuit, System of a Down and Slipnot are all bands that play nu metal.

Quentin Tarantino, Robert Rodriguez, Frank Miller and Takashi Miike are all auteurs of nu in film.
by iAreLied December 25, 2009
Pete: I'm going to throw your c.d.s out the window if you don't shut up!!
Self: Nu! Nu Pete, dun do it!

(Also see dun for definition.)
by Kaylahh July 29, 2006