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The Collaborative International Dictionary
Betumble

Betumble \Be*tum"ble\, v. t. [imp. & p. p. Betumbled.] To throw into disorder; to tumble. [R.]

From her betumbled couch she starteth.
--Shak.

Wiktionary
betumble

vb. (context transitive English) To tumble (about); throw into disorder or disarrange the parts of.