conker

Have you seen Tom Smith's conker? He's got ever such big one!

你看到过汤姆·史密斯的七叶树吗？他有一棵非常大的七叶树。

One of the disgraced pair told a friend ‘We thought there would be a clear winner, with one conker smashed and the other carrying on going round and round the accelerator.

这对丢人的活宝中有一个对他的朋友说，“我们以为（两个马栗子）中会有一个彻底的胜者可以继续在加速器中运动，另一个则会粉身碎骨。

That is a conker tree.

那是一棵七叶树。

conker

n.七叶树果实 (复)conkers: 打七叶树果实的游戏