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1.
a noun (usually a human) without an ass
that girl is assless
by Cybelle November 27, 2006
 
2.
Pertaining to an individual who does not appear to be in possession of a rear end. Assless people tend to be extremely skinny or scrawny, and often are not aware of their lack of a behind.

(Can sometimes be abbreviated to 'ASSLSS' in text format.)
So that's Johnny? Woah, he has NO ass! Assless, right there.
by SSLA March 09, 2011
 
3.
basily some one with no ass.
That white girl is ass less.
by shaun Ha. October 27, 2006