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Definitions of gacha:
noun: A small toy sold in a plastic capsule in a vending machine, especially toys sold in or associated with Japan.
noun: The vending machine that sells such toys.
noun: (video games) A mechanism in certain video games, especially mobile games, whereby in-game items or characters are purchased randomly with real money.
noun: (video games) A game which features this mechanic as its central feature.
noun: A village-level administrative division in Inner Mongolia.