'Show card' definitions:

Definition of 'show card'

From: WordNet

noun

A poster advertising a show or play [syn: show bill, show card, theatrical poster]

Definition of 'Show card'

From: GCIDE

Show \Show\, n. [Formerly written also shew.]
1. The act of showing, or bringing to view; exposure to sight; exhibition. [1913 Webster]
2. That which os shown, or brought to view; that which is arranged to be seen; a spectacle; an exhibition; as, a traveling show; a cattle show. [1913 Webster]
As for triumphs, masks, feasts, and such shows. --Bacon. [1913 Webster]
3. Proud or ostentatious display; parade; pomp. [1913 Webster]
I envy none their pageantry and show. --Young. [1913 Webster]
4. Semblance; likeness; appearance. [1913 Webster]
He through the midst unmarked, In show plebeian angel militant Of lowest order, passed. --Milton. [1913 Webster]
5. False semblance; deceitful appearance; pretense. [1913 Webster]
Beware of the scribes, . . . which devour widows' houses, and for a shew make long prayers. --Luke xx.
46. 47. [1913 Webster]
6. (Med.) A discharge, from the vagina, of mucus streaked with blood, occuring a short time before labor. [1913 Webster]
7. (Mining) A pale blue flame, at the top of a candle flame, indicating the presence of fire damp. --Raymond. [1913 Webster]
Show bill, a broad sheet containing an advertisement in large letters.
Show box, a box xontaining some object of curiosity carried round as a show.
Show card, an advertising placard; also, a card for displaying samples.
Show case, a gla?ed case, box, or cabinet for displaying and protecting shopkeepers' wares, articles on exhibition in museums, etc.
Show glass, a glass which displays objects; a mirror.
Show of hands, a raising of hands to indicate judgment; as, the vote was taken by a show of hands.
Show stone, a piece of glass or crystal supposed to have the property of exhibiting images of persons or things not present, indicating in that way future events. [1913 Webster]