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ballast

Ballast is something that provides security and balance. (noun)

  1. An example of ballast for some people is their belief in God.
  2. An example of ballast on a boat is gravel used to balance or make the boat stable.
  3. An example of ballast is bags of sand in a hot air balloon.

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See ballast in Webster's New World College Dictionary

See ballast in American Heritage Dictionary 4

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