Moldboard

n.	1.	A curved plate of iron (originally of wood) back of the share of a plow, which turns over the earth in plowing.
	2.	(Founding) A follow board.

Noun

1.

moldboard - wedge formed by the curved part of a steel plow blade that turns the furrow Synonyms: mouldboard

moldboard plow, mouldboard, mouldboard plough, wedge