plow

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

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

act on verbally or in some form of artistic expression; "This book deals with incest"; "The course covered all of Western Civilization"; "The new book treats the history of China"

move in a way resembling that of a plow cutting into or going through the soil; "The ship plowed through the water"