Dewell (1994), following Brugman (1981) and Lakoff (1987), provides a semantic analysis of over by relying more exclusively on image-schema transformations than did Brugman and Lakoff. The Brugman-Lakoff-Dewell analysis, however, can be improved by using simpler image-schemas, more natural image-schema transformations, and metaphorical extensions. A key idea adopted in the present article is to capture both trajectors and landmarks three-dimensionally and topologically. This modification brings about the elimination of unessential features such as the shape and size of the trajector and the landmark, contact/non-contact between the trajector and the landmark, and physical properties of the trajector. Its main advantage is that a central image-schema for a semicircular path provides the basis for explaining all of the senses of over using natural image-schema transformations and metaphorical extensions. The proposed image-schema transformations include: segment profiling, profiling the endpoint of access paths, the profiled peak position of the semicircular path with the constraint that the rest of the semicircular path is excluded, and the extension of the semicircular path-trajectory to an image of covering. The proposed metaphorical senses are time, means, and control. In addition, the radial category relating each sense of over is presented.