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Meaning of milestone

mile•stone

Pronunciation: (mīl'stōn"), [key]
— n.
  1. a stone functioning as a milepost.
  2. a significant event or stage in the life, progress, development, or the like of a person, nation, etc.: Her getting the job of supervisor was a milestone in her career.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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