plough in WordNet English dictionary

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

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