Coulter (Agriculture)
Encyclopedia
Plough
The plough or plow is a tool used in farming for initial cultivation of soil in preparation for sowing seed or planting. It has been a basic instrument for most of recorded history, and represents one of the major advances in agriculture...
which consists of a vertically mounted knife-like blade. It cuts down into the soil ahead of the plowshare
Plowshare
In agriculture, a plowshare is a component of a plow . It is the cutting or leading edge of a moldboard which closely follows the coulter when plowing....
, softening the dirt and allowing the plow to undercut the furrow made by the coulter.