Glossary /// Alias
Barrel roll
Also known as Rolls and Reversal Mechanics — the canonical term used on this site.
Training background: Informal term for the granby or related shoulder rolls
Colloquial — the barrel-rolling motion of a granby or shoulder roll
Barrel roll is the colloquial name for the granby and related shoulder rolls — drawn from the resemblance between the rolling motion across the shoulders and a barrel turning along its long axis.
Etymology. “Barrel roll” is gym vocabulary for the shape of the movement rather than a technical label: the body turns over its own long axis while the shoulders stay in contact with the mat. Instructional material uses “granby roll”, “shoulder roll” or “inside roll” for the specific variants.
Mechanics. The roll changes the roller’s orientation without surrendering the hips — the shoulder stays as the pivot while the inside leg threads through, converting a bottom turtle or referee’s-position problem into a seated or supine guard.
Cross-reference. “Granby roll” is the canonical name for the wrestling version. Full coverage on Rolls and Reversals.