Pronunciation: (cham'pē-un),[key] —n. 1. a person who has defeated all opponents in a competition or series of competitions, so as to hold first place: the heavyweight boxing champion. 2. anything that takes first place in competition: the champion of a cattle show. 3. an animal that has won a certain number of points in officially recognized shows: This dog is a champion. 4. a person who fights for or defends any person or cause: a champion of the oppressed. 5. a fighter or warrior.
—v.t. 1. to act as champion of; defend; support: to champion a cause. 2. Obs.to defy.
—adj. 1. first among all contestants or competitors.