Definition of "yellow-card" []

• To show someone a yellow card (verb)

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• "A yellow-card foul was called on Ghana's Jonathan Mensah against American Clint Dempsey to set up the kick."
• ""But a dive is itself an offense, and a yellow-card one, so the peer pressure against cheating would actually increase and the referee's job would become easier," Barclay argues."
• "The web site reports that a referee imposed a yellow-card diving penalty on the dying athlete as he collapsed to the ground."