n. A curved piece of metal on a plow or bulldozer that clears the free dirt from the blade.
n. A follow board.
the GNU version of the Collaborative International Dictionary of English
n. A curved plate of iron (originally of wood) back of the share of a plow, which turns over the earth in plowing.
n. A follow board.
The Century Dictionary and Cyclopedia
n. The curved board or metal-plate in a plow, which turns over the furrow.
n. In founding, the board on which the pattern for a mold is laid; a follow-board.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. wedge formed by the curved part of a steel plow blade that turns the furrow
Word Usage
"Then, as now, farmers used a long curved blade called a moldboard to turn over the earth, exposing nutrients and getting rid of grass, stubble and weeds on the surface."