Source : Webster's Revised Unabridged Dictionary (1913)

Spender \Spen"der\, n.
   One who spends; esp., one who spends lavishly; a prodigal; a
   spendthrift.

Source : WordNet®

Spender
     n 1: English poet and critic (1909-1995) [syn: {Stephen Spender},
           {Sir Stephen Harold Spender}]
     2: someone who spends money prodigally [syn: {spendthrift}, {spend-all},
         {scattergood}]
     3: someone who spends money to purchase goods or services [syn:
         {disburser}, {expender}]