yellow cardEnglishOxford Dictionary of Englishyellow card /ˈjɛləʊ ˌkɑːd / ▸ noun (in soccer and some other games) a yellow card shown by the referee to a player being cautioned. Compare with red card:Eddis was shown the yellow card for a late tackle on Candlish. ▸ verb [with object] (yellow-card) (of the referee) caution (a player) by showing a yellow card.