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

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

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.

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg