turf (countable and uncountable, plural turfs or turves) (uncountable) A layer of earth covered with grass; sod. quotations Definition of TURF in the Definitions.net dictionary. Meaning of TURF. What does TURF mean? Information and translations of TURF in the most comprehensive dictionary definitions resource on the web. Turf is the top layer of a grassy area consisting of a kind of mat of grass and its roots. It’s the layer you could cut out and pull up in one piece.Such pieces are in fact pulled up and used to form lawns. This is also called turf. A close synonym is sod. TURF meaning is - Surface layer of earth with grass and roots, or a specific area of interest.