colter, coulter - a sharp steel wedge that precedes the plow and cuts vertically through the soil

landside - component consisting of a side piece opposite the moldboard

lister plough, lister plow, middle buster, middlebreaker, lister - moldboard plow with a double moldboard designed to move dirt to either side of a central furrow

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

plow, plough - a farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing

ploughshare, plowshare, share - a sharp steel wedge that cuts loose the top layer of soil