odd or even

noun
variants: or

odd and even

or

odds or evens

Definition of odd or even

  1. :  one of several games of chance or skill in which there is guessing or betting as to whether a certain number will be odd or even: such as a :  a game in which one player selects and holds an odd or even number of counters (as beans) and the other guesses which it is b :  a game of betting on casts of dice or turns of a wheel c :  a simplified form of fan-tan (see fan-tan 1) d :  a mathematical game similar to nim in which the object is to take or leave an odd number of counters

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