macadam Hear it!

macadam definition

mac·adam (mə kad′əm)

noun

  1. small broken stones used in making roads; esp., such stones combined with a binder such as tar or asphalt
  2. macadamized pavement

Etymology: after John L. McAdam (1756-1836), Scot engineer

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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