Source : Webster's Revised Unabridged Dictionary (1913)

Contestant \Con*test"ant\, n. [Cf. F. contestant.]
   One who contests; an opponent; a litigant; a disputant; one
   who claims that which has been awarded to another.

Source : WordNet®

contestant
     n 1: a person who participates in competitions
     2: a person who dissents from some established policy [syn: {dissenter},
         {dissident}, {protester}, {objector}]