(æd)  [Abbrev.] 

    = ADVANTAGE n. 2. Freq. attrib., in ad court, point.
 
  1928 in Funk's Stand. Dict. 1979 J. KRAMER Game (1981) viii. 134 In the final set, when I was ahead only 4-3, I hit the chalk with a backhand volley to save an ad Frankie held against my serve. 1986 New Yorker 13 Oct. 137/3 Mecir, with Becker serving, fought off three ad points that Becker held. He then went to ad himself with a tremendous backhand return. 1990 Tennis July 80/2 His serve spins away in the ad court, forcing you to change the direction of the ball.