Definitions for "Overturn"
To subvert; to destroy; to overthrow.
The act off overturning, or the state of being overturned or subverted; overthrow; as, an overturn of parties.
cause the downfall of; of rulers; "The Czar was overthrown"; "subvert the ruling class"
Keywords:  tumped, vase, upright, overset, clumsy
To turn or throw from a basis, foundation, or position; to overset; as, to overturn a carriage or a building.
turn from an upright or normal position; "The big vase overturned"; "The canoe tumped over"
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"
The almost spontaneous mixing of all layers of water in a reservoir or lake when the water temperature becomes similar from top to bottom. This may occur in the fall/winter when the surface waters cool to the same temperature as the bottom waters and also in the spring when the surface waters warms after the ice melts.
Fall cooling and spring warming of surface water increases density, and gradually makes temperature and density uniform from top to bottom. This allows wind and wave action to mix the entire lake. Mixing allows bottom waters to contact the atmosphere, raising the water's oxygen content. However, warming may occur too rapidly in the spring for mixing to be effective, especially in small sheltered kettle lakes.
The sinking of surface water and rise of bottom water in a lake or sea that results from changes in/ temperature that commonly occur in spring and fall.
Keywords:  upset, goliath, improbable, sled, badly
the act of upsetting something; "he was badly bruised by the upset of his sled at a high speed"
an improbable and unexpected victory; "the biggest upset since David beat Goliath"
Keywords:  overpower, conquer
To overpower; to conquer.
annul by recalling or rescinding; "He revoked the ban on smoking"; "lift an embargo"; "vacate a death sentence"
To apply too much spin and not enough finger lift on the ball, preventing the ball from having the proper action.
rule against; "The Republicans were overruled when the House voted on the bill"
change radically; "E-mail revolutionized communication in academe"