Wiktionary
red cards
n. (red card English)
Usage examples of "red cards".
He didn't mind discussing them between casual pokings into my business with the red cards.
Drax won the cut and elected to stay where he was and take the red cards.
This worked well enough in its simplest forms: Leftist agitators and terrorists were represented by red cards.
Three of our team receive red cards, so Wayland ended up with only eight players on the field, having led 3-2 at half-time.
Mott snapped, and within three minutes he and the Oxford man and a driver were speeding toward London with a set of red cards showing on their windshield, allowing them to pass roadblocks and salute policemen who barred certain thoroughfares.