ring-in
noun 4
Definitions
noun
1
A replacement made at the last minute, often in a sporting context.
2
A racehorse or greyhound fraudulently substituted for another in a race.
3
An outsider.
"But I couldn't get into an underground contract party because I'm a ring-tail, or ring-in." That means an outsider, one not born in Broken Hill.
4
A person pretending to be someone else; an imposter.
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