Source : Webster's Revised Unabridged Dictionary (1913)

Baff \Baff\ (b[a^]f), v. t. & i. [Scot., prob. imitative; cf. G.
   baff, interj. imitating the sound of a shot.]
   To strike; to beat; to make a baff. [Scot. or Golf]

Baff \Baff\, n.
   A blow; stroke; thud; specif. (Golf), a stroke in which the
   sole of the club hits the ground and drives the ball aloft.
   [Scot. or Golf]

Baff \Baff\ (b[a^]f), n.
   A blow; a stroke. [Scot.] --H. Miller.