ring-in
ring-in
n
1. Austral a horse that serves as a substitute for another horse in a race
2. Austral and NZ a person or thing that is not normally a member of a particular group; outsider
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014