When musicians, mainly "rock" frontmen, sing in a way that they sound like they have a horrible cold. It's mostly used to cover up the fact that a singer has no real talent in singing from the diaphragm. Mostly associated with emo "rock"

(Editorial note: the quotation marks are used cause I am not entirely convinced that these can be considered true rock bands)
You ever hear 'Simple Plan'?
Yeah, THAT'S nasal rock
by lishuss May 11, 2006
Get the nasal rock mug.