Plain English Meaning
A gentle push or pull on the yoke to fix a small climb or descent and bring the aircraft back to level.
Full Definition
A small, deliberate push or pull on the control yoke applied to the elevator to correct an unwanted climb or descent and return the aircraft to level flight. The pressure is held just long enough to stop the trend shown on the vertical speed indicator and altimeter, then released or relaxed as the aircraft settles back to the desired altitude.
Context Anchor
Seen during instrument straight-and-level flight when the vertical speed indicator shows the is climbing or descending.