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An abbreviation used to say a girl one has seen has a "big ass", which helps guys talk about girls they see without creeping people out.
Georgia's got B'ass, she's round, you know what i mean?
by Orsche December 03, 2009
A low-frequency sound or instrument which is used to enhance music or provide some sort of musical ground. Most modern music uses electronically-generated bass synths, while traditionally-created music uses low-frequency instruments for the bass.

Bass can also be referred to an audio setting that makes the low frequencies of a song more pronounced.
The bass was set so high the stereo speakers got fried when the next song began to play.
by AYB September 14, 2003
The lazy term for Badass, the act of being badass
This party is so Bass!
by lmart February 09, 2010
The audio frequencies between about 20Hz and 250Hz. New music with synthesized effects can be produce very powerful low notes, so reproduction in the 30 to 50hz region becomes important.
Flat response may not give very satisfying bass as the ear is less sensitive as the volume and frequency go down.
by Monster Cable May 22, 2009
Bitches Are So Shady! This means that if your a female you cant help but to be shady to men....... In one way shape or form all Bitches Are So Shady!
You know that one bitch that my nigga likes well she is the B.A.S.S. Master!!!!
by That Boy Matt Smith April 14, 2006
An abreviation for badass.
"Whoa, the Amazing Spiderman is totally bass!"
BASS in the colloquial description used in situations where someone is so overweight the fat on their BACK hangs down and merges with their ASS with no obvious demarcation between the two (i.e. their Back combines with their Ass to form a new single body part - their BASS).

Also refer to GUNT (i.e. a merged Gut and Cunt) and GENIS (i.e. a merged Gut and Penis).
“Check out the BASS on that massive lady. I can’t tell where her Back stops and her Ass begins"...
by Ha-G February 20, 2011