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.

Origin:
1300–50; replacing earlier moldbred, Middle English mold bred. See mold3 (defs 1 and 2), mold1 (def 3), board

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World English Dictionary
moldboard (ˈməʊldˌbɔːd)
 
n
the US spelling of mouldboard

mouldboard or (US) moldboard (ˈməʊldˌbɔːd)
 
n
the curved blade of a plough, which turns over the furrow
 
moldboard or (US) moldboard
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
Adjustable latch claws to prevent the plow share and moldboard from chattering.
Conventional tillage with moldboard plow-Any tillage system that includes the use of a moldboard plow.
Samples for the current study were obtained from the moldboard plowing and no till treatments, each with stover-return.
Initial site preparation can include moldboard plowing the site followed by rototilling.
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