a group of seven bright stars in the constellation Ursa Major
"The farmer decided to rest from his work and instead gazed up at the plough twinkling brightly above the dark fields."
A device pulled through the ground in order to break it open into furrows for planting.
"The farmer hitched his horse to the heavy plough to prepare the soil for next spring's crops."
To use a plough on to prepare for planting.
"The farmer started early in the morning to plough the heavy clay field before the rain came."
The brightest seven stars of the constellation Ursa Major. They are Alkaid, Mizar, Alioth, Megrez, Dubhe, Merak, and Phecda.
"The village history book lists several prominent families, including the Ploughs who farmed the northern fields for generations."
A surname.