dead man's hand
Definition from Wiktionary, the free dictionary
The aces and eights sense is from a legend that Wild Bill Hickok was holding such cards at the time he was killed in 1876.
- (poker) A pair of aces and a pair of eights, in a player's hand.
- (poker, obsolete) Other various hands, among them a full house of three jacks and two tens.
- (poker) An ace and an eight as a starting hand in Texas hold 'em