Barrel Roll Definition

noun

A flight maneuver in which an airplane makes a complete rotation on its longitudinal axis while approximately maintaining its original direction.

American Heritage

A complete roll made by an airplane around its longitudinal axis while it simultaneously completes one spiral revolution in the air.

Webster's New World

An aerobatic flying maneuver in which the pilot causes the airplane to complete one loop in the same time that the airplane completes one roll, creating the appearance that the airplane is riding on the inside of a cylinder.

Wiktionary

A movement (usually during a car crash) where a car flips on its roof, then falls back on its wheels after doing at least one full 360° horizontal rotation.

Wiktionary