Discard

From Magic: The Gathering

Discarding a card is putting it from your hand into your graveyard.

There are two reasons why a player should discard a card. One is at the end of his or her turn. During the discard phase each player reduces their hand to seven cards if they have more in hand. Otherwise you discard a card if a card tells you to.

If you discard a card with the madness ability you may pay it's madness cost to play it instead.