plough

an agricultural implement with sharp blades, attached to a horse, tractor, etc, for cutting or turning over the earth

any of various similar implements, such as a device for clearing snow

a plane with a narrow blade for cutting grooves in wood

(in agriculture) ploughed land

to begin or undertake a task

to till (the soil) with a plough

to make (furrows or grooves) in (something) with or as if with a plough

to move (through something) in the manner of a plough

to work at slowly or perseveringly

(intr; foll by into or through) (of a vehicle) to run uncontrollably into something in its path

(tr; foll by in, up, under, etc) to turn over (a growing crop, manure, etc) into the earth with a plough

slang��(intr) to fail an examination