A bum or hobo, a crackhead, a fiend or begger.
Someone who is involved in drugs and other such things.
A homeless or nearly homeless person.
Swerves usually are: uneducated and dumb, dirty, smelly, unattractive, and have missing teeth and messy hair.
A swerve is fully, totally 100% dedicated to anything and everything they have to do to get what they want and needs, usually getting drugs, alcohol, tobacco, a prostitute, etc.
Swerves generally are found in groups, and on street corners or alleyways.
"Dont give that swerve a dollar!"
"Get the fuck outta my face, you fuckin swerve!"
"I need to sell this shit, Where all the swerves at?"
"Clean yourself up, you fuckin swerve!"
"If you got a couple bucks, or a rock, a swerve will clean your house, wash your car, steal shit and bring it to you, they'll evev kill someone for you!"