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1.
A homeless layabout who lives and sleeps on the street.
Kyle: Hey Dan , I'm wondered that you live still on the street!You're such a street bum!!!
by Firegod Vulcan May 23, 2008
 
2.
usually a homeless person cronically addicted to alcohol and or street drugs with possible mental health issues and no care about appearance or personal hygene and having little to no respect for themselves.
look at that bum urinating in the doorway.
street bums sitting on street corners holding signs begging for money to support there drug habbit.
by phoenixman October 16, 2010