A select tune or Melody of a guitar tab in a song, like in AC/DC's "Back in black" the little tune that gets stuck in your head, is a RIFF
Jimmy Page can throw down some COMPLICATED INSANE AND FAST RIFFS
by Bock October 4, 2003
To make stuff up on the spot.
Can be applied to nearly anything--music, writing, lying, whatever.
I riffed up an excuse as to why I didn't show up... she laid off eventually.
by Logical Dash August 8, 2005
West Midlands insult similar to chav. Origins are uncertain but it is thought to be an abbreviation of the phrase riff-raff, and localised use in Bromsgrove dates back as far as the late 1980s, if not earlier

Can be both a noun (riff), referring to the antisocial underclass, or an adjective (riffy), meaning something cheap, scummy or gully gully.
- "What a riff!"
- "He was the riffiest kid in school."
- "Those trainers are well riffy."
- "I'm a riffy stig."
by Creese April 16, 2008
A segment of a song that puts emphasis on a certain instrument by using a distinctive sound. The instrument is usually a guitar.
The main guitar riff in Tool's "Third Eye" is 1 minute and 3 seconds long
by icallit_tacoisland September 25, 2005
Something that nu metal bands can't seem to use with good effect.
no needed
by Mike B July 3, 2003
Plain and simply: Selected guitar melodies.


HORNS UP! ^nn^
KEEP IT SICK AND BRUTAL!!!!!!!!!!!!!!!!
Black Sabbath: IRON MAN!!!!!!!!!!!
The latter encompasses one of the catchiest riffs ever created.
by Dimmu80 February 9, 2004
A poor person, used as a term of offence for people who look scruffy, dirty or are just generally poverty stricken. Use in Bromsgrove, Worcestershire has been recorded for the best part of the last 15 years.
"What a bunch of fuckin' riffs"
"Get lost you riff"
"I'm not goin down the Duke, it's well riffy"
by Captain Robot March 14, 2006