Plain English Meaning
A turn where you keep adding more bank as you go around, because the wind is pushing you outward and you need a tighter turn to stay on the path you want over the ground.
Full Definition
A turn in which the pilot progressively increases the angle of bank as the aircraft proceeds through the maneuver, used to compensate for a tailwind component that would otherwise cause the airplane's ground track to widen away from the intended reference.
Context Anchor
Seen in ground-reference maneuvers such as eights along a road, where the pilot changes the bank to keep the airplane’s path over the ground shaped correctly in the wind.