The Collaborative International Dictionary
Overturning
Overturn \O`ver*turn"\, v. t. [imp. & p. p. Overturned; p. pr. & vb. n. Overturning.]
To turn or throw from a basis, foundation, or position; to overset; as, to overturn a carriage or a building.
To subvert; to destroy; to overthrow.
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To overpower; to conquer.
--Milton.Syn: To demolish; overthrow. See Demolish.
Wiktionary
overturning
n. The act by which something is overturned. vb. (present participle of overturn English)