ringer

Short definition from Wiktionary

Noun

1. 1
   Someone who rings, especially a bell ringer.
2. 2
   A crowbar.
3. 3
   In the game of horseshoes, the event of the horseshoe landing around the pole.
4. 4
   A game of marbles where players attempt to knock each other's marbles out of a ring drawn on the ground.
5. 5
   A ringer T-shirt.
6. 6
   A top performer.
7. 7
   The champion shearer of a shearing shed.
8. 8
   A stockman, a cowboy.
9. 9
   Any person or thing that is fraudulent; a fake or impostor.
10. 10
    A person highly proficient at a skill or sport who is brought in, often fraudulently, to supplement a team.
11. 11
    A horse fraudulently entered in a race using the name of another horse.
12. 12
    A fraudulently cloned (or cut-and-shut) motor vehicle.
13. 13
    A person, animal, or entity which resembles another so closely as to be taken for the other; a look-alike (now usually in the phrase dead ringer).
14. 14
    An officer having the specified number of rings (denoting rank) on the uniform sleeve.
15. 15
    A fan of the novel The Lord of the Rings by J. R. R. Tolkien and/or the film trilogy based on it.

Proper noun

1. 1
   A surname.