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moldboard

[ mohld-bawrd, -bohrd ]

noun

  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.


moldboard

/ ˈməʊldˌbɔːd /

noun

  1. the US spelling of mouldboard
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of moldboard1

1300–50; replacing earlier moldbred, Middle English mold bred. See mold 3 moldboard ( fordefs 1, 2 ), mold 1 moldboard ( fordef 3 ), board
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Example Sentences

The furrow slice sliding over a perfect moldboard leaves the surface of the upturned ground as even as the bottom of the furrow.

The moldboard of a plow must be smooth in order to properly shed the earth freely to make an easy turn-over.

A field plowed with a defective moldboard will be full of these places.

This shows that the soil is slipping off the moldboard easily.

He had a moldboard nearly as bright as a diamond and about as hard, one that "sang" at its work.

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