n. 七叶树果实

[ noun ]
the inedible nutlike seed of the horse chestnut
<noun.plant>

Horse-chestnut \Horse`-chest"nut\, Horsechestnut
\Horse`chest"nut\, n.
1. (Bot.) The large nutlike seed of a species of {[AE]sculus}
({[AE]sculus Hippocastanum}), formerly ground, and fed to
horses, whence the name. The seed is not considered edible
by humans. [WordNet sense 2]
[1913 Webster + WordNet 1.5]

2. (Bot.) The tree itself ({Aesculus hippocastanum}), which
was brought from Constantinople in the beginning of the
sixteenth century, and is now common in the temperate
zones of both hemispheres; it has palmate leaves and large
clusters of white to red flowers followed by brown shiny
inedible seeds. The native American species is also called
{buckeye} and {conker}. [WordNet sense 1]
[1913 Webster + WordNet 1.5]


conker \conk"er\ (k[o^][ng]k"[~e]r), n.
the inedible nutlike seed of the horsechestnut.

Syn: buckeye, horsechestnut, horse-chestnut.
[WordNet 1.5]