turf

A surface layer of earth containing a dense growth of grass and its matted roots; sod.

An artificial substitute for such a grassy layer, as on a playing field.

A piece cut from a layer of earth or sod.

A piece of peat that is burned for use as fuel.

The range of the authority or influence of a person, group, or thing; a bailiwick: synonym: field.

A geographical area; a territory.

The area claimed by a gang, as of youths, as its personal territory.