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Street Dog(g).

A gangster, drug dealer, or criminal who hands around streets day and night.
Usually very important person, has power.

Term used by crip gangs on the upper-east coast, usually describing drug dealers or people associated with the gang who live in the gangs area.
"Man, John is a fucking street dogg. Shit, every time i come round the corner its like he's there!"
by Street Dogg December 09, 2003
Biggest, Baddest N**** on the STREETZ
man, 50 cent da street dogg of rap NOW!
by dun dun dun December 16, 2003