plough: [OE] Plough was not the original English word for an ‘implement for turning over the soil’. That was Old English sulh, a relative of Latin sulcus ‘furrow’. Plough was borrowed in the 10th century from Old Norse plógr, a descendant of prehistoric Germanic *plōgaz. And this in turn was derived from a base *plōgacquired from one of the ancient Indo-European languages of northern Italy (source also of Latin plaustrum ‘wagon’). The earliest record we have of the word being used for the characteristically shaped group of seven stars in Ursa major is from early 16th-century Scotland.
