Plain English Meaning

VNE is the absolute speed limit of the airplane. No matter the conditions, you must never fly faster than this speed.

Full Definition

VNE is the maximum speed at which an airplane may be operated in smooth air. Flying faster than VNE risks structural damage or failure, even when the air is calm. VNE is shown as a red radial line on the airspeed indicator.

Context Anchor

Seen on the airspeed indicator, in the airplane’s operating handbook, and during discussions of high-speed descents or speed margins.

Derivation

From the aviation convention of using V (for velocity) followed by letters that describe the type of speed limit. NE stands for 'Never Exceed.' So VNE literally reads as 'velocity, never exceed.'