Definition of turfs:
(n) :
(uncountable) A layer of earth covered with grass; sod.
(n) :
(countable) A piece of such a layer cut from the soil. May be used as sod to make a lawn, dried for peat, stacked to form earthen structures, etc.
(n) :
(uncountable, specifically) A surface of synthetic fibers made to look like grass; artificial turf.
(n) :
(uncountable, slang) A territory claimed by a gang as their own.
(n) :
(uncountable, by extension) A person's domain or sphere of influence.
(v) :
To cover with turf; to create a lawn by laying turfs.