Source : Webster's Revised Unabridged Dictionary (1913)

Nimble \Nim"ble\, a. [Compar. {Nimbler}; superl. {Nimblest}.]
   [OE. nimel, prob. orig., quick at seizing, fr. nimen to take,
   AS. niman; akin to D. nemen, G. nehmen, OHG. neman, Icel.
   nema, Goth. nima, and prob. to Gr. ? to distribute. [root] 7.
   Cf. {Nomand}, {Numb}.]
   Light and quick in motion; moving with ease and celerity;
   lively; swift.

         Through the mid seas the nimble pinnace sails. --Pope.

   Note: Nimble is sometimes used in the formation of
         self-explaining compounds; as, nimble-footed,
         nimble-pinioned, nimble-winged, etc.

   {Nimble Will} (Bot.), a slender, branching, American grass
      ({Muhlenbergia diffusa}), of some repute for grazing
      purposes in the Mississippi valley.

   Syn: Agile; quick; active; brisk; lively; prompt.

Source : WordNet®

nimble
     adj 1: moving quickly and lightly; "sleek and agile as a gymnast";
            "as nimble as a deer"; "nimble fingers"; "quick of
            foot"; "the old dog was so spry it was halfway up the
            stairs before we could stop it" [syn: {agile}, {quick},
             {spry}]
     2: mentally quick; "an agile mind"; "nimble wits" [syn: {agile}]