ring·er1|ˈriNGər| noun 1. a person who is highly proficient at a particular skill or occupation and is brought in to supplement a team: it was revealed that a competing firm brought in a paid ringer. • an athlete or horse fraudulently substituted for another to gain an advantage in a competition: league eligibility rules had grown flexible and ringers began suiting up. • informal a person or thing that looks exactly like another: he's a ringer for the Italian actor Marcello Mastroianni. 2. a person or device that rings something.
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