Definition of turf war noun from the Oxford Advanced Learner's Dictionary

 

turf war

 noun
noun
BrE
 
; NAmE
 
 
jump to other results
a violent disagreement between two groups of people about who should control a particular area, activity or business a vicious turf war between rival gangs of drug dealers Word Origin 1970s: from the notion of a war over turf in the informal sense ‘area regarded as personal territory’ (originally the area controlled by, for example, a street gang or criminal).
See the Oxford Advanced American Dictionary entry: turf war