Source : Webster's Revised Unabridged Dictionary (1913)

Huff \Huff\, v. t. [imp. & p. p. {Huffed}; p. pr. & vb. n.
   {Huffing}.] [Cf. OE. hoove to puff up, blow; prob. of
   imitative origin.]
   1. To swell; to enlarge; to puff up; as, huffed up with air.
      --Grew.

   2. To treat with insolence and arrogance; to chide or rebuke
      with insolence; to hector; to bully.

            You must not presume to huff us.      --Echard.

   3. (Draughts) To remove from the board (the piece which could
      have captured an opposing piece). See {Huff}, v. i., 3.

Source : WordNet®

huffing
     adj : breathing heavily [syn: {puffing}, {puffy}]
     n : an act of forcible exhalation [syn: {puffing}, {snorting}]