NOUN (1)

1. a poor golf stroke in which the club head hits the ground before hitting the ball;


VERB (2)

1. strike (a golf ball) such that the ground is scraped first;

2. strike (the ground) in making a sclaff;

The Collaborative International Dictionary of English v.0.48:

Sclaff \Sclaff\, v. i. [imp. & p. p. Sclaffed; p. pr. & vb. n.
   Sclaffing.] [Orig. uncert.]
   1. To scuff or shuffle along. [Scot.]
      [Webster 1913 Suppl.]

   2. (Golf) To scrape the ground with the sole of the club,
      before striking the ball, in making a stroke.
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Sclaff \Sclaff\, v. t. (Golf)
   To scrape (the club) on the ground, in a stroke, before
   hitting the ball; also, to make (a stroke) in that way.
   [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Sclaff \Sclaff\, n. [Scot.]
   1. A slight blow; a slap; a soft fall; also, the accompanying
      noise.
      [Webster 1913 Suppl.]

   2. (Golf) The stroke made by one who sclaffs.
      [Webster 1913 Suppl.]

   3. A thin, solid substance, esp. a thin shoe or slipper.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

sclaff
    n 1: a poor golf stroke in which the club head hits the ground
         before hitting the ball
    v 1: strike (a golf ball) such that the ground is scraped first
    2: strike (the ground) in making a sclaff