1tum·ble 
/ˈtʌmbəl/ verb
tum·bles; tum·bled; tum·bling /ˈtʌmbəl/ verb [no obj] 1 a : to fall down suddenly and quickly
▪ He tripped and tumbled to the ground. ▪ The abandoned house finally tumbled [=collapsed] to the ground. ▪ The statue came tumbling down during the riots.
b : to fall forward while turning over
▪ The satellite was tumbling out of control. ▪ She slipped and tumbled down the hill/steps. 2 : to fall or drop suddenly in amount, value, etc.
▪ Stock prices tumbled today. 3 always followed by an adverb or preposition : to move in a fast, confused, or uncontrolled way
▪ Everyone came tumbling out of the bar at closing time. ▪ He tumbled into bed and fell asleep. ▪ Water tumbled over the rocks. 4 : to roll or turn your body across the ground or through the air while performing a series of athletic movements
▪ tumbling acrobats/gymnasts 5 of hair : to fall or hang down loosely
▪ Her long, curly hair tumbled down her back.
▪ He tripped and tumbled to the ground. ▪ The abandoned house finally tumbled [=collapsed] to the ground. ▪ The statue came tumbling down during the riots.
b : to fall forward while turning over
▪ The satellite was tumbling out of control. ▪ She slipped and tumbled down the hill/steps.
▪ Stock prices tumbled today.
▪ Everyone came tumbling out of the bar at closing time. ▪ He tumbled into bed and fell asleep. ▪ Water tumbled over the rocks.
▪ tumbling acrobats/gymnasts
▪ Her long, curly hair tumbled down her back.
tumble to [phrasal verb]
tumble to (something) Brit, informal : to understand or become aware of (something)
▪ They didn't tumble to [=realize] the seriousness of the problem. ▪ I thought you'd tumble to what I'd meant.
▪ They didn't tumble to [=realize] the seriousness of the problem. ▪ I thought you'd tumble to what I'd meant.
