a playing marble, especially one that is not used as a shooter.
mibs, (used with a singular verb) the game of marbles.

Origin of mib

1890–95, Americanism; shortened variant of marble
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mib

Contemporary Examples of mib

  • MIB: His excellent taste in sneakers and child-like enthusiasm for his Kindle.

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