Source : Webster's Revised Unabridged Dictionary (1913)

Few \Few\ (f[=u]), a. [Compar. {Fewer}; superl. {Fewest}.] [OE.
   fewe, feawe, AS. fe['a], pl. fe['a]we; akin to OS. f[=a]h,
   OHG. f[=o] fao, Icel. f[=a]r, Sw. f[*a], pl., Dan. faa, pl.,
   Goth. faus, L. paucus, cf. Gr. pay^ros. Cf. {Paucity}.]
   Not many; small, limited, or confined in number; --
   indicating a small portion of units or individuals
   constituing a whole; often, by ellipsis of a noun, a few
   people. ``Are not my days few?'' --Job x. 20.

         Few know and fewer care.                 --Proverb.

   Note: Few is often used partitively; as, few of them.

   {A few}, a small number.

   {In few}, in a few words; briefly. --Shak.

   {No few}, not few; more than a few; many. --Cowper.

   {The few}, the minority; -- opposed to the many or the
      majority.

Source : WordNet®

fewer
     adj : (comparative of `few' used with count nouns) quantifier
           meaning a smaller number of; "fewer birds came this
           year"; "the birds are fewer this year"; "fewer trains
           were late" [ant: {more(a)}]