A small sheet of paper or card (sense 9) on which a message may be written; (in later use) spec. a postcard. Formerly also: a short letter, note…

a card intended for or bearing a written message; (spec. in the 18th cent.) a card of invitation to a reception or entertainment.

a greetings card sent to convey good wishes on the occasion of a person's birthday.

a postcard showing a view (sense 10a).

An act or instance of accepting an invitation; a note, card, etc., sent for this purpose.

A sheet of paper or card, now typically folded in half, having a decorative design on the front and bearing an appropriate greeting, designed to be…

cards, bearing the names of the two parties, sent out to friends as an announcement of the wedding; also in singular.

Short for comic valentine n. at compounds 1b. Now historical.

A card designed to be carried by post without an envelope; spec. (a) (originally) a card of a regulation size, marked to show that postage has been…

A card used for correspondence, a postcard; spec. a card with a gummed edge which can be folded and sealed to serve in place of a letter and envelope.

= postcard, n.

postcard.

North American colloquial. A postal card. Now historical.

(a) a small card used for making notes, an index card; (b) = notelet, n. 1b.

A card, esp. a postcard or greetings card, on which a photograph is fixed or printed.

a card sent to relatives and friends at Christmas (or another festival).

(a) n. a postcard having a picture (esp. a scenic view) printed on one side; (figurative) something reminiscent of or suitable for a picture…

a postcard of a type commonly sold at the seaside, spec. one depicting a caricature of lewd or vulgar humour.

a printed card expressing condolence on a bereavement.