The story
From gang (“a combination of tools or machines coordinated to work together as a set”) + plough (“a farm implement used to break up soil into furrows for sowing”).
Etymology from Wiktionary, CC BY-SA 4.0.
gangplough
gang·ploughToday it means: A plough with multiple plowshares, mouldboards, and coulters, arranged in a series to turn parallel furrows simultaneously. Full definition →