#1 Plough n. [Big Dipper, Dipper, Charles's Wain, Wain, Wagon] a group of seven bright stars in the constellation Ursa Major. wn
#2 Plough v. [plow, plough] move in a way resembling that of a plow cutting into or going through the soil; "The ship plowed through the water". wn
#3 Plough n. [plow, plough] a farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing. wn
#4 Plough v. [plow, plough, turn] to break and turn over earth especially with a plow; "Farmer Jones plowed his east field last week"; "turn the earth in the Spring". wn
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