Oval

a. [Fr. ovale, Sp. oval, It. ovale, from Lat. ovum, egg.]

1. Pertaining to eggs; done in the egg, or inception; as, oval conceptions. [Obs.] Browne.
2. Having the shape or figure of an egg; resembling the longitudinal section of an egg. Lindley.
3. Hence, oblong and curvilinear, with both ends of about the same breadth; elliptical.
4. (Bot.) Broadly elliptical.

Oval chuck (Mech.), a lathe-chuck so constructed that work attached to it, and cut by the turning-tool in the usual manner, becomes of an oval form.