mold-board

mold·board

[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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Based on the Random House Dictionary, © Random House, Inc. 2013.
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moldboard (ˈməʊldˌbɔːd) [Click for IPA pronunciation guide]
 
n
the US spelling of mouldboard

00:10
Mold-board is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
mouldboard or (US) moldboard (ˈməʊldˌbɔːd) [Click for IPA pronunciation guide]
 
n
the curved blade of a plough, which turns over the furrow
 
moldboard or (US) moldboard
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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