Source : Webster's Revised Unabridged Dictionary (1913)

Fumble \Fum"ble\, v. i. [imp. & p. p. {Fumbled}; p. pr. & vb. n.
   {Fumbling}.] [Akin to D. fommelen to crumple, fumble, Sw.
   fumla to fusuble, famla to grope, Dan. famle to grope,
   fumble, Icel. falme, AS. folm palm of the hand. See {Feel},
   and cf. {Fanble}, {Palm}.]
   1. To feel or grope about; to make awkward attempts to do or
      find something.

            Adams now began to fumble in his pockets.
                                                  --Fielding.

   2. To grope about in perplexity; to seek awkwardly; as, to
      fumble for an excuse. --Dryden.

            My understanding flutters and my memory fumbles.
                                                  --Chesterfield.

            Alas! how he fumbles about the domains.
                                                  --Wordsworth.

   3. To handle much; to play childishly; to turn over and over.

            I saw him fumble with the sheets, and play with
            flowers.                              --Shak.

Fumble \Fum"ble\, v. t.
   To handle or manage awkwardly; to crowd or tumble together.
   --Shak.

Source : WordNet®

fumble
     n : (sports) dropping the ball [syn: {muff}]

fumble
     v 1: feel about uncertainly or blindly; "She groped for her
          glasses in the darkness of the bedroom" [syn: {grope}]
     2: make one's way clumsily or blindly; "He fumbled towards the
        door" [syn: {blunder}]
     3: handle clumsily
     4: 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}, {botch
        up}, {muff}, {blow}, {flub}, {screw up}, {ball up}, {spoil},
         {muck up}, {bungle}, {fluff}, {bollix}, {bollix up}, {bollocks},
         {bollocks up}, {bobble}, {mishandle}, {louse up}, {foul
        up}, {mess up}, {fuck up}]
     5: drop or juggle or fail to play cleanly a grounder; "fumble a
        grounder"