Scots plough
(US Scots plow) now historical
noun
A type of swing plough, made chiefly (sometimes wholly) from wood, and drawn by a team of up to eight horses or oxen (also more fully old Scots plough); (also) a lighter type of swing plough which can be drawn by two horses, especially one made entirely from cast iron.
Origin
Mid 18th century; earliest use found in Adam Dickson (bap. 1721, d. 1776), agricultural writer.