n.

an acrobatic feat of rolling or turning end over end

a sudden drop from an upright position

同義詞：spillfall

Jobless rate tumbles to near four-year low
GameStop Tumbles After Missing the Mark on Sales
Average Cost of Manor House Tumbles to Pounds 2.7m; PROPERTY
Billions in Debt, Detroit Tumbles Into Insolvency - NYTimes.com
Modeling E. coli tumbles by rotational diffusion. Implications for chemotaxis.
FedEx profit for 3rd quarter tumbles 31% as customers pick slower, cheaper service
Application of Management Process of Tumbles Prevention in Clinical Inpatients
SYSTEMS FOR OPENING AND CLOSING ACCESS APERTURES IN THE OUTER WALLS OF TANNERY PADDLE TUMBLES AND THE LIKE
Basic Geometric Considerations for a Self-Calibration of Strapdown Inertial Sensor Blocks by Tumbles
A method for acceleration of the absorption of water in the dry wash load of an automatic washing machine, using a controlled sequen...