1) Apparatus pulled by oxen 2) Artery-cleaning aid 3) Blizzard aid 4) Blizzard apparatus 5) Blizzard battler 6) Blizzard need 7) Break ground 8) Bronze Age innovation 9) Bulldoze 10) Clear a winter road 11) Clear drifts 12) Clear snow 13) Clear snow-covered roads 14) Clear streets of snow 15) Close follower of a team Found on https://www.crosswordclues.com/clue/plow
most important agricultural implement since the beginning of history, used to turn and break up soil, to bury crop residues, and to help control ... [7 related articles] Found on http://www.britannica.com/eb/a-z/p/81
[n] - a farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing 2. [v] - move in a way resembling that of a plow cutting into or going through the soil 3. [v] - to break and turn over earth esp. with a plow Found on http://www.webdictionary.co.uk/definition.php?query=plow