noun
red card
In sports, especially soccer, a card shown by the referee to send a player off the field for a serious foul or misconduct.
その選手は危険なタックルでレッドカードをもらった。
The player received a red card for a dangerous tackle.
Variant with interpunct, sometimes seen in formal or explanatory contexts.
A yellow card is a warning; a red card results in immediate ejection from the game.
Loanword from English 'red card'.