It is often a winning card. In one kind of poker game, the first card to each player is given face down.

VOA: special.2009.11.22

Because he wasn't a very good card player his posse took him for fairly sizable amounts of money.

由于他不是个打牌高手,他的警卫队,把他看作等身的钞票

耶鲁公开课 - 1871年后的法国课程节选

A player does not show this card to the other players.

VOA: special.2009.11.22