oval

名词 oval:

1. a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it
   同义词：ellipse

形容词 oval:

1. rounded like an egg
   同义词：egg-shaped, elliptic, elliptical, oval-shaped, ovate, oviform, ovoid, prolate

1. Comets move around the sun like planets, but in long oval course.
   彗星象行星一样绕太阳运转，然而其轨道呈狭长的椭圆形。
2. A pitcher, especially a decorative one with a base, an oval body, and a flaring spout.
   大口水罐一个具有装饰性的水罐，有一个底，椭圆形的罐体和一个突出来的壶嘴
3. The mirror is oval.
   镜子是椭圆的。
4. The playing field is a large oval.
   球场很大，呈椭圆形。

o.val

adj.（形容词）
Resembling an egg in shape.
卵形的：形状象鸡蛋的
Resembling an ellipse in shape; elliptical.
椭圆形的：形状类似椭圆的，椭圆的
n.（名词）
An egg-shaped or elliptical form or figure.
卵形，椭圆形：卵形或椭圆形的形状或图形
An elliptical track, as for racing or athletic events.
椭圆形跑道：如用于比赛或运动项目的椭圆形跑道

来源：
Medieval Latin ôv3lis
中世纪拉丁语 ôv3lis
from Latin ôvum [egg] * see awi-
源自 拉丁语 ôvum [卵，蛋] *参见 awi-

【引伸】
o.vally
adv.（副词）
o.valness
n.（名词）