'Postal card' definitions:

Definition of 'postal card'

(from WordNet)
noun
A card for sending messages by post without an envelope [syn: postcard, post card, postal card, mailing- card]

Definition of 'Postal card'

From: GCIDE
  • Postal \Post"al\, a. [Cf. F. postal.] Belonging to the post office or mail service; as, postal arrangements; postal authorities. [1913 Webster]
  • Postal card, or Post card, a card used for transmission of messages through the mails, at a lower rate of postage than a sealed letter; also called postcard. Such cards are sold by the government with postage already paid, or by private vendors without a postage stamp. The message is written on one side of the card, and the address on the other.
  • Postal money order. See Money order, under Money.
  • Postal note, an order payable to bearer, for a sum of money (in the United States less than five dollars under existing law), issued from one post office and payable at another specified office.
  • Postal Union, a union for postal purposes entered into by the most important powers, or governments, which have agreed to transport mail matter through their several territories at a stipulated rate. [1913 Webster]