A specialization of shaped thing. Each instance of round thing is a tangible or intangible thing with an (at least nearly) round or elliptical shape in a least one dimension. A round object might be one-dimensional (e.g. a ring that bounds a 2-D circle), two-dimensional (e.g. an intangible ellipse) or three-dimensional (e.g. a sphere or a chicken egg).

Other specializations of round thing include cone, ball, hemisphere, and loop.