Verb
1. to break and turn over earth especially with a plow;
"Farmer Jones plowed his east field last week""turn the earth in the Spring"2. deal with 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"3. move in a way resembling that of a plow cutting into or going through the soil;
"The ship plowed through the water"