Tumble

a sudden drop from an upright position

an acrobatic feat of rolling or turning end over end

fall down, as if collapsing

fly around

fall suddenly and sharply

put clothes in a tumbling barrel, where they are whirled about in hot air, usually with the purpose of drying

throw together in a confused mass

understand, usually after some initial difficulty

cause to topple or tumble by pushing

fall apart

do gymnastics, roll and turn skillfully

roll over and over, back and forth

suffer a sudden downfall, overthrow, or defeat