Answer: ploughing

AnswerCrossword Clue
PLOUGHINGSpring task in Iowa
ploughingCut (a furrow or line) with or as if with a plow
ploughing(esp. of a vehicle) Move in a fast and uncontrolled manner
ploughingTurn up the earth of (an area of land) with a plow, esp. before sowing
ploughingFail (an examination)
ploughingContinue steadily despite difficulties or warnings to stop
ploughingAdvance or progress laboriously or forcibly
ploughingClear snow from (a road) using a snowplow
ploughingPLOUGH, to turn soil with a farm implement, also PLOW
ploughing(of a ship or boat) Travel through (an area of water)