being of crucial importance; "a pivotal event"; "Its pivotal location has also exposed it to periodic invasions"- Henry Kissinger; "the polar events of this study"; "a polar principal"
a gambling game played with two dice; a first throw of 7 or 11 wins and a first throw of 2, 3, or 12 loses and a first throw of any other number must be repeated to win before a 7 is thrown, which loses the bet and the dice
when two dice are thrown and both come up showing one spot the results is called `craps' or `snake eyes'