cerebellum

/ˌsɛrəˈbɛləm/
noun
  1. The part of the brain at the back of the head that controls balance, movement, and coordination.
    • The cerebellum helps you walk without stumbling.
    • Damage to the cerebellum can make it hard to catch a ball.
    • When you learn to ride a bike, your cerebellum stores the muscle memory.
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