Verb
1. turn from an upright or normal position;
"The big vase overturned""The canoe tumped over"2. cause to overturn from an upright or normal position;
"The cat knocked over the flower vase""the clumsy customer turned over the vase""he tumped over his beer"3. rule against;
"The Republicans were overruled when the House voted on the bill"4. cause the downfall of; of rulers;
"The Czar was overthrown""subvert the ruling class"5. annul by recalling or rescinding;
"He revoked the ban on smoking""lift an embargo""vacate a death sentence"6. change radically;
"E-mail revolutionized communication in academe"