yellow card
/ˈjɛl.əʊ ˌkɑːd/ · noun
Meaning
- A yellow-coloured card, shown to a player (especially in association football) as a caution that he has committed a flagrant foul; a further such foul would result in a red card.
- A card sent out by a travelling dance or theatre company to request temporary personnel from a local labor union.
- A yellow ticket.