In card games this is one of the two terms used to describe a card's value. Each card has both a rank and a suit.
For example, the "queen of hearts" has a rank of "queen" and a suit of "hearts". In most games the cards are ranked from low to high in the following order: 2,3,4,5,6,7,8,9,10,jack,queen,king,ace.
Games where the ace is the lowest card: Rummy and
Gin Rummy. The ace is always high in Hearts and Spades. In Poker it can be either high or low.