dice

• dice
• 1 [plural] singular die one or more small blocks of wood, plastic etc that have six sides with a different number of spots on each side, used in games
• throw/roll the dice
• It's your turn to roll the dice.
• ! Die is singular and dice is plural, but many people use dice when they are talking about a single die.
• 2 [uncountable] any game of chance that is played with dice
• 3

   the dice are loaded

  the situation is arranged so that a particular person will win or gain an advantage
• 4

   no dice

  especially American English old-fashioned spoken used to refuse to do something or to say that something is not possible:
• 'Can I borrow some cash?' 'Sorry, no dice.'
• 5

   a throw of the dice

  something you do that you hope will have an effect on a situation, but is not certain to do so:
• a last desperate throw of the dice to try and win his wife back

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.