Theater. a performer or performance that wins enthusiastic or prolonged applause.
a spectacularly arresting or appealing person or thing: This bright plaid suit is a real show-stopper.
Origin of show-stopper
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
informal a stage act, etc, that receives so much applause as to interrupt the performance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012