Source : Webster's Revised Unabridged Dictionary (1913)

Waster \Wast"er\, n. [OE. wastour, OF. wasteor, gasteor. See
   {Waste}, v. t.]
   1. One who, or that which, wastes; one who squanders; one who
      consumes or expends extravagantly; a spendthrift; a
      prodigal.

            He also that is slothful in his work is brother to
            him that is a great waster.           --Prov. xviii.
                                                  9.

            Sconces are great wasters of candles. --Swift.

   2. An imperfection in the wick of a candle, causing it to
      waste; -- called also a {thief}. --Halliwell.

   3. A kind of cudgel; also, a blunt-edged sword used as a
      foil.

            Half a dozen of veneys at wasters with a good fellow
            for a broken head.                    --Beau. & Fl.

            Being unable to wield the intellectual arms of
            reason, they are fain to betake them unto wasters.
                                                  --Sir T.
                                                  Browne.

Source : WordNet®

waster
     n 1: someone who dissipates resources self-indulgently [syn: {wastrel}]
     2: a person who destroys or ruins or lays waste to; "a
        destroyer of the environment"; "jealousy was his undoer";
        "uprooters of gravestones" [syn: {destroyer}, {ruiner}, {undoer},
         {uprooter}]