Coiled such that one edge is inside, and one outside the coil, giving a spiral effect in cross section.
Convoluted.
To confuse, mix up (something) with something else.
To make unnecessarily complex.
To fold or coil into numerous overlapping layers.
Having the shape of an oval.
Of or pertaining to an ovum.
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.
An elongated round shape resembling an egg or ellipse.
A sports field, typically but not exclusively oval in shape.