Source : Webster's Revised Unabridged Dictionary (1913)

Surplus \Sur"plus\, n. [F., fr. sur over + plus more. See
   {Sur-}, and {Plus}, and cf. {Superplus}.]
   1. That which remains when use or need is satisfied, or when
      a limit is reached; excess; overplus.

   2. Specifically, an amount in the public treasury at any time
      greater than is required for the ordinary purposes of the
      government.

Surplus \Sur"plus\, a.
   Being or constituting a surplus; more than sufficient; as,
   surplus revenues; surplus population; surplus words.

         When the price of corn falleth, men give over surplus
         tillage, and break no more ground.       --Carew.

Source : WordNet®

surplus
     n : a quantity much larger than is needed [syn: {excess}, {surplusage},
          {nimiety}]

surplus
     adj : more than is needed, desired, or required; "trying to lose
           excess weight"; "found some extra change lying on the
           dresser"; "yet another book on heraldry might be
           thought redundant"; "skills made redundant by
           technological advance"; "sleeping in the spare room";
           "supernumerary ornamentation"; "it was supererogatory
           of her to gloat"; "delete superfluous (or unnecessary)
           words"; "extra ribs as well as other supernumerary
           internal parts"; "surplus cheese distributed to the
           needy" [syn: {excess}, {extra}, {redundant}, {spare}, {supererogatory},
            {superfluous}, {supernumerary}]