Plain English Meaning
How easily and quickly an aircraft can be moved into different flight positions and speeds while still feeling controllable.
Full Definition
A quality of an aircraft that permits it to be easily and quickly directed through changes in flightpath, attitude, and airspeed, with stability and ease of control throughout the maneuver. Maneuverability is governed by the airplane's weight, inertia, size and location of flight controls, structural strength, and powerplant.
Context Anchor
Seen in discussions of airplane handling, training maneuvers, aircraft design, and limits.