Source : Webster's Revised Unabridged Dictionary (1913)

Competitor \Com*pet"i*tor\, n. [L.: cf. F. comp['e]titeur.]
   1. One who seeks what another seeks, or claims what another
      claims; one who competes; a rival.

            And can not brook competitors in love. --Shak.

   2. An associate; a confederate. [Obs.]

            Every hour more competitors Flock to their aid, and
            still their power increaseth.         --Shak.

Source : WordNet®

competitor
     n : the contestant you hope to defeat; "he had respect for his
         rivals"; "he wanted to know what the competition was
         doing" [syn: {rival}, {challenger}, {competition}, {contender}]