(law) a defense by an accused person purporting to show that he or she could not have committed the crime in question
exonerate by means of an alibi
a defense of some offensive behavior or some failure to keep a promise etc.
a card game in which two rows of cards are dealt and players can bet on the color of the cards or on which row will have a count nearer some number
a gambling game using cards; the object is to hold cards having a higher count than those dealt to the banker up to but not exceeding 21