- A card issued by the US government allowing an alien to work at most jobs in the United States.
- A green-colored card shown to the captain of a women's lacrosse team by a referee, indicating a delay-of-game penalty.
Origin of green cardSense 1, from the green card on which the document was formerly printed.
(plural green cards)
- (US) A US work permit, officially known as United States Permanent Resident Card.
- (field hockey) A warning card, given to a player for an infraction of the rules. A further infraction may warrant a yellow card or red card.
green card - Legal Definition