To fail to follow suit; playing a card of a different suit when having no card of the suit led.
To cast off, repudiate.
To abandon, forsake, discontinue (an action, habit, intention, etc), sometimes by open declaration.
To make a renunciation of something.
To give up, resign, surrender.
To surrender formally some right or trust.
To decline further association with someone or something, disown.
An act of renouncing.
In card playing, to accidentally reveal one's cards or hand.
To inadvertently reveal any secret, particularly a secret that puts one at an advantage or disadvantage.