horse chestnut

• 一种大型落叶乔木，或指其产出的有光泽的褐色果实。该果实对人类不可食用，但常用于民间药用或手工艺品制作。

A large tree or its shiny brown nut, which is not edible for humans but is often used in traditional remedies or crafts.

1. Tree speciesB1formal

   A large deciduous tree (Aesculus hippocastanum) with palmate leaves and spiny green fruits containing shiny brown seeds.

   欧洲七叶树

   • The horse chestnut tree in the park is over a hundred years old.
   • In spring, horse chestnuts are covered with beautiful white flowers.
   • Children often collect the shiny brown seeds from horse chestnuts.

2. Seed of the treeB1informal

   The shiny brown nut-like seed of the horse chestnut tree, also known as a conker.

   七叶树的种子

   • Kids play conkers with horse chestnuts in the autumn.
   • Horse chestnuts are not edible and can be toxic to humans.
   • She found a perfect horse chestnut on the ground.