Plain English Meaning

The nose of the airplane swings to the left. In most propeller airplanes, this happens on its own when power is high and speed is low, and the pilot has to use right rudder to keep the nose straight.

Full Definition

Rotation of the airplane's nose to the left around its vertical axis. In single-engine propeller airplanes, left yaw is the natural tendency caused by the combined left-turning forces (torque, P-factor, spiraling slipstream, and gyroscopic precession) that become most pronounced at high power settings and high angles of attack, such as during slow flight, , and .