Definitions of cantilever:
A bracket or block projecting from the wall of a house, to support a balcony, cornice, etc.; a form of bridge truss, usually supported on a pier, balanced and projecting towards a similar truss on the opposite side of the space bridged, with which it is connected directly or by a girder. Also, cantalever.– The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.