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Meaning of moldboard

mold•board

Pronunciation: (mōld'bôrd", -bōrd"), [key]
— n.
  1. the curved metal plate in a plow that turns over the earth from the furrow.
  2. a large blade mounted on the front of a bulldozer to push loose earth.
  3. a board forming one side or surface of a mold for concrete.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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