Plain English Meaning
How hard the pilot is pulling or pushing on the control yoke to raise or lower the airplane's nose. Pulling back tilts the nose up; releasing pressure lets it come down.
Full Definition
The force a pilot applies to the control yoke or stick in the fore-and-aft (forward/back) direction to move the elevator and control the airplane's pitch attitude. In a steep turn, increased back pressure on the elevator is required to maintain altitude because part of the wing's lift is acting horizontally rather than vertically.
Context Anchor
Encountered during steep turns, , and any where the pilot must nose with the or stick.