[n] a farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing
[n] a group of seven bright stars in the constellation Ursa Major
[v] to break and turn over earth esp. with a plow; "Farmer Jones plowed his east field last week"; "turn the earth in the Spring"
[v] move in a way resembling that of a plow cutting into or going through the soil; "The ship plowed through the water"