encirclement
enclosing, skirting
An elongated round shape resembling an egg or ellipse.
A thing having such a shape, such as an arena.
In a projective plane, a set of points such that no three are collinear and there is a unique tangent line at each point.
A sports field, typically but not exclusively oval in shape.
Of or pertaining to an ovum.
Having the shape of an oval.