1. Tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds
   "Children collected buckeyes from beneath the horse chestnut trees";
   - buckeye, Aesculus hippocastanum
    
2. The inedible nutlike seed of the horse chestnut
   "Children collected horse chestnuts to play the traditional game";
   - buckeye, conker [Brit]

Derived forms: horse chestnuts

Type of: angiospermous tree, flowering tree, seed

Part of: Aesculus, genus Aesculus

Encyclopedia: Horse chestnut