Territory owned and controlled by major street gangs.
One should never enter 'gangland' unless 'down'.
Often warred over by rival gangs.
"Don't be stepping up into that 'zoo', that's major gangland."
"The Vietnamese and Lebanese fight over gangland in the outer-western Suburbs of Sydney."
(adj.) Any form of killing where-by the killer will stand square-on to the victim while stabbing/shooting them in the lower chest region (although it could also be in the face, neck, legs). Usually, this is done with excessive force.