ground loop noun 2verb 1forms 3 noun2 •A (usually unwanted) current that flows between two points that are meant to be at the same potential, but are not. •A sudden, potentially damaging turn made by an aircraft while on the ground, owing to user error or adverse weather conditions. verb1 •To suffer a ground loop manoeuvre.I slewed into the deep grass, throttled up again to regain runway speed, tried to abort the take-off and ground-looped through the perimeter fence. — 2000 formsground looped · ground looping · ground loops