oval

Short definition from Wiktionary

Noun

1. 1
   An elongated round shape resembling an egg or ellipse.
2. 2
   A thing having such a shape, such as an arena.
3. 3
   In a projective plane, a set of points such that no three are collinear and there is a unique tangent line at each point.
4. 4
   A sports field, typically but not exclusively oval in shape.

Adjective

1. 1
   Having the shape of an oval.
2. 2
   Of or pertaining to an ovum.

Proper noun

1. 1
   A cricket ground in South London.
2. 2
   Ellipsis of Oval Office.