achiever

from WordNet (r) 3.0 (2006)

achiever
    n 1: a person with a record of successes; "his son would never
         be the achiever that his father was"; "only winners need
         apply"; "if you want to be a success you have to dress like
         a success" [syn: {achiever}, {winner}, {success},
         {succeeder}] [ant: {failure}, {loser}, {nonstarter},
         {unsuccessful person}]

from The Collaborative International Dictionary of English v.0.48

Achiever \A*chiev"er\, n.
   One who achieves; a winner.
   [1913 Webster]