noun
a person hired to escort players onto the stage at sporting events, particularly in darts or boxing
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The walk-on girl escorted the players onto the stage at the darts tournament.
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Did you see the walk-on girl at the boxing match? She looked stunning.
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The walk-on girl at the car show was a total babe.
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In the world of professional sports, the walk-on girl is seen as a symbol of glamour and excitement.