Wiktionary
snow ploughs
n. (snow plough English)
Usage examples of "snow ploughs".
Beyond the lights of the signal box I could see flares burning, silhouetting the huge shapes of the tractors and snow ploughs trying to clear the main road from the city, with a line of trucks crawling in their wake.
Still higher up the road became a twisting culvert cut through great cliffs of light-coloured polished granite, and a fresh fall of snow that had not yet been cleared by the snow ploughs brought the car's speed down to near foot pace.