Champion (Chipmunk song) definition

(1) Holding first place in a contest

"A champion show dog"

"A prizewinning wine"

(2) Someone who is dazzlingly skilled in any field

(3) Someone who fights for a cause

(4) Someone who has won first place in a competition

(5) A person who backs a politician or a team etc.

"All their supporters came out for the game"

"They are friends of the library"

(6) Protect or fight for as a champion