plough-gang
/ˈplaʊɡaŋ/(US plow-gang) Scottish. Now historical
noun
A measure of arable land based on the area able to be tilled by one plough with a team of horses or oxen in the year, varying in extent according to the type of plough used, the nature of the ground, etc.
Origin
Mid 16th century. From plough + gang. Compare Old Icelandic plóg-gangr plough furrow.