Plain English Meaning
Flying a turn so that the path you trace on the ground stays the same distance from a chosen point all the way around. Because wind pushes the airplane faster or slower over the ground at different points in the turn, the pilot has to keep adjusting how steeply the airplane is banked to hold that even circle.
Full Definition
A ground-reference maneuvering concept in which the airplane's flight path traces a circle of unchanging radius over the ground while turning, requiring the pilot to continuously vary bank angle to compensate for the effect of wind on groundspeed throughout the turn.
Context Anchor
Used in ground reference maneuvers, especially , where the pilot practices controlling the airplane’s path over the ground while wind is affecting it.