moldboard

The curved plate of a plow that turns over the soil.

The curved board or metal-plate in a plow, which turns over the furrow.

In founding, the board on which the pattern for a mold is laid; a follow-board.

A curved plate of iron (originally of wood) back of the share of a plow, which turns over the earth in plowing.

A follow board.

A curved piece of metal on a plow or bulldozer that clears the free dirt from the blade.

A follow board.

wedge formed by the curved part of a steel plow blade that turns the furrow