yellow card

名词noun

1. 1(sports) A yellow-coloured card, shown to a player (especially in association football) as a caution that he or she has committed a flagrant foul; a further such foul would result in a red card.
2. 2(medicine) One of various yellow-colored cards used to verify the healthiness, vaccination status or other medical info of travelers.
3. 3(medicine, UK) A form to record safety concerns and adverse reactions to medicinal drugs.
4. 4often attributiveA card sent out by a travelling dance or theatre company to request temporary personnel from a local labor union.
5. 5historicalA yellow ticket.
6. 6historicalA card given to British Army personnel during The Troubles.