An oval (from Latin ovum, "egg") is a closed curve in a plane which "loosely" resembles the outline of an egg. The term is not very specific, but in some areas (projective geometry, technical drawing, etc.) it is given a more precise definition. In common English, the term is used in a broader sense; any shape which reminds one of an egg. The 3-dimensional version of an oval is called an ovoid.

Read more about Oval:  Oval in Geometry, Projective Geometry, Egg Shape, Technical Drawing, In Common English