ploughed adjective3 •Turned over with the blade of a plough to create furrows (usually for planting crops). •(figurative, rare) Well-trodden or well-researched, previously explored. •(slang) Drunk.they stacked the glass up + right up to the level that you would normally have if you had ice in your drink anyway + and consequently I got ploughed — 1983 formsmore ploughed · most ploughed