Overturn \O`ver*turn"\, v. t. [imp. & p. p. {Overturned}; p. pr. & vb. n. {Overturning}.] 1. To turn or throw from a basis, foundation, or position; to overset; as, to overturn a carriage or a building. [1913 Webster] 2. To subvert; to destroy; to overthrow. [1913 Webster] 3. To overpower; to conquer. --Milton. [1913 Webster] Syn: To demolish; overthrow. See {Demolish}. [1913 Webster]