The Collaborative International Dictionary of English v.0.48:

Teeing ground \Teeing ground\ (Golf)
   The space from within which the ball must be struck in
   beginning the play for each hole.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

teeing ground
    n 1: the starting place for each hole on a golf course; "they
         were waiting on the first tee" [syn: tee, teeing
         ground]