CARD

(GREETINGS) [noun] [C] - a rectangular piece of stiffened paper, folded in half, with a picture on the front and often a message printed inside, sent on a special occasionanniversary/birthday/Christmas/get-well/greetings/valentine cardsIt's Steve's birthday on Thursday - I must send him a card.We received lots of cards when our baby was born.A card can also be a postcard (= a card, often with a photograph or picture on one side, which can be addressed and sent without an envelope).Terry sent us a card of the Empire State Building from New York.