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To perform acrobatic feats such as somersaults, rolls, or twists.
(verb-intransitive)
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To fall or roll end over end: The kittens tumbled over each other.
(verb-intransitive)
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To spill or roll out in confusion or disorder: Students tumbled out of the bus.
(verb-intransitive)
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To pitch headlong; fall: tumbled on the ice.
(verb-intransitive)
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To proceed haphazardly.
(verb-intransitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.