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From The Collaborative International Dictionary of English v.0.48:
Oval \O"val\, a. [F. ovale, fr. L. ovum egg. Cf. Egg, Ovum.] 1. Of or pertaining to eggs; done in the egg, or inception; as, oval conceptions. [Obs.] [1913 Webster] 2. Having the figure of an egg; oblong and curvilinear, with one end broader than the other, or with both ends of about the same breadth; in popular usage, elliptical. [1913 Webster] 3. (Bot.) Broadly elliptical. [1913 Webster] 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. [1913 Webster]