noun

• (agriculture) A device pulled through the ground in order to break it open into furrows for planting.
  "Meronyms: ploughshare, plowshare, share, moldboard, mouldboard, coulter, colter, jointer, chisel, ploughbeam, beam, ploughstaff, staff, hake"
• (yoga) A yoga pose resembling a traditional plough, halāsana.

verb

• (transitive) To use a plough on soil to prepare for planting.
  "I've still got to plough that field."
• (intransitive) To use a plough.
  "Some days I have to plough from sunrise to sunset."
• (transitive, colloquial) To knock over or run over (someone) without stopping.
  "My brother ploughed me over."
• (nautical) To run through, as in sailing.
  "With speed we plough the watery way."

name

• (astronomy, British, common name) The brightest seven stars of the constellation Ursa Major. They are Alkaid, Mizar, Alioth, Megrez, Dubhe, Merak, and Phecda.
  "Later on, as I walked home / The Plough was showing, and Orion"