Source : Webster's Revised Unabridged Dictionary (1913)

Ruff \Ruff\, v. t. [imp. & p. p. {Ruffed}; p. pr. & vb. n.
   {Ruffing}.]
   1. To ruffle; to disorder. --Spenser.

   2. (Mil.) To beat with the ruff or ruffle, as a drum.

   3. (Hawking) To hit, as the prey, without fixing it.