Definition: The closely mowed area around a putting green, between the putting surface and any rough that might also surround the green. Another term for "fringe." Sometimes called the "collar," but not always accurately. Collar and fringe may be the same thing in many instances, but a collar is not necessarily as closely mowed as an apron. A collar may refer to a collar of rough, for instance; the apron (or fringe) is always very closely mowed.
Also Known As: Fringe, froghair (seriously).
