Source : Webster's Revised Unabridged Dictionary (1913)

Fluff \Fluff\, v. t. & i.
   To make or become fluffy; to move lightly like fluff.
   --Holmes.

Fluff \Fluff\, n. [Cf. 2d {Flue}. [root]84.]
   Nap or down; flue; soft, downy feathers.

Source : WordNet®

fluff
     n 1: any light downy material
     2: something of little value or significance [syn: {bagatelle},
         {frippery}, {frivolity}]
     3: a blunder (especially an actor's forgetting the lines)

fluff
     v 1: make a mess of, destroy or ruin; "I botched the dinner and
          we had to eat out"; "the pianist screwed up the
          difficult passage in the second movement" [syn: {botch},
           {bumble}, {fumble}, {botch up}, {muff}, {blow}, {flub},
           {screw up}, {ball up}, {spoil}, {muck up}, {bungle}, {bollix},
           {bollix up}, {bollocks}, {bollocks up}, {bobble}, {mishandle},
           {louse up}, {foul up}, {mess up}, {fuck up}]
     2: erect or fluff up; "the bird ruffled its feathers" [syn: {ruffle}]
     3: ruffle (one's hair) by combing towards the ends towards the
        scalp, for a full effect [syn: {tease}]