cultivator, tiller - a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture)

disc harrow, disk harrow - a harrow with a series of disks set on edge at an angle

farming, husbandry, agriculture - the practice of cultivating the land or raising stock

plow, plough, turn - to break and turn over earth especially with a plow; "Farmer Jones plowed his east field last week"; "turn the earth in the Spring"