Snow-drift meaning

An accumulation of snow caused by wind currents, typically much deeper and higher than the depth of snow that fell directly.

We had two feet of snow fall, two days ago, but when I drove off the road about five hundred yards into the forest (thinking I was still on the road) I lost my car in a twelve foot deep snow drift. When I returned two days later it was under another eighteen feet of snow...the tow-truck's fifty foot winch cable couldn't get it out of the snow drift until spring.