ringer

1 ENTRIES FOUND:
ringer /ˈrɪŋɚ/ noun
plural ringers
ringer
/ˈrɪŋɚ/
noun
plural ringers
Britannica Dictionary definition of RINGER
[count]
2 
: the part of a telephone that rings to signal that someone is calling
3 
informal : a person or animal that enters a contest illegally by using a false name, pretending not to have much skill, etc.
4 
informal : someone who looks very much like another person