Post"al (?), a. [Cf. F. postal.]
Belonging to the post office or mail service; as, postal arrangements;
postal authorities.
Postal card, or Post card, a card sold by
the government for transmission through the mails, at a lower rate of postage than a sealed letter. The message is written on
one side of
the card, and the direction 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.
Hear it pronounced