The victor is the winner of a contest, usually one that requires physical skills or strength, like in battle or sports. Calling someone the victor implies that he or she triumphed in a difficult competition.
The origin of the noun victor is in the Latin word vincere, meaning “conquer.” If you conquer your opponents, in a weekend-long chess showdown, the wrestling match, the beauty contest, the debate, or a 5K run, you are the victor. It means you won — victory is yours. Whenever an opponent is defeated, the winner is the victor.