Placing a gemstone inside a tumbler machine, which smooths out and enhances the luster of a mineral.

sport of performing gymnastic maneuvers requiring flexibility and strength.

fall suddenly. The same word also means fall rapidly head long.

The end-over-end rotation of an unstable projectile in flight. Sometimes referred to as Bullet Tipping or Keyholing.

(n) the gymnastic moves of an acrobat

Cleaning articles by rotating them in a cylinder with cleaning materials.

Gymnastic skills that begin and end on the performing surface including forward/backward rolls, inverted extended skills (cartwheels, handstands, walkovers, handsprings, etc.) aerials, twists and flip [..]

A skill that begins and ends on the performing surface

Any gymnastic skill used in a cheer, dance, or for crowd appeal. Can be done as an individual or as a group in unison. 

Process used in some paint storehouses whereby containers are repeatedly up-ended to redisperse pigments which may have settled or caked during storage of the paint.

When flagellar rotation abruptly changes to clockwise from counterclockwise bacteria will stop swimming and tumble in place and appear incapable of going anywhere. Explore bacterial motility