What is the meaning of plough?

noun

• A group of seven bright stars in the constellation Ursa Major.
  • synonyms: Big Dipper, Dipper, Charles's Wain, Wain, Wagon
• A farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing.
  • synonyms: plow

verb

• Move in a way resembling that of a plow cutting into or going through the soil.
  • usage: "The ship plowed through the water"
  • synonyms: plow
• To break and turn over earth especially with a plow.
  • usage: "Farmer Jones plowed his east field last week"; "turn the earth in the Spring"
  • synonyms: plow, turn