A playing card, of the trump suit that is held in reserve until needed to win a trick. / Something used to obtain an advantage, sometimes unscrupulously.

A pamphlet accompanying a CD, film etc., summarising the contents and production.

(computer hardware) A solid state digital memory storage format, commonly found on computers, digital cameras and cellphones.

(poker, chiefly in the plural) A playing card, dealt face down, that the holder need not reveal until the showdown / (by extension) Something held in reserve, or concealed, until it is useful

Enrolled as a member of an organization, and having a card to prove it; loyal to that organization or the cause it supports. / (by extension) Loyal and dedicated to some cause. / Official.

Alternative form of flashcard

plural of flash card

plural of race card

(sports) A printed card or pamphlet giving information about a series of horse races and listing the horses to be run; a racebook.

To invoke race in a discussion in order to score points in that discussion.