expression, godan verb (-tsu)
Describes a flipping or tumbling motion, often in a dramatic or forceful context. The phrase is somewhat literary or expressive.
See also: 翻筋斗打つ
彼は階段からもんどりを打って落ちた。
He tumbled head over heels down the stairs.
The cat leaped down from a high place, turning a somersault.