grass and the soil that is bound to its roots, forming a thick mat
a piece of this that has been cut from the ground
(the turf)
the sport or business of horse racing
racecourses in general
informal
an area regarded as the domain of a particular person or group, e.g. a part of a city in which a gang conducts illegal activities
a person's sphere of interest, knowledge, or control
turfy adj
[Old English]