Aesculus hippocastanum Aesculus hippocastanum /ˈɛskjʊləs ˌhɪpəˈkæstənəm/

noun

1. Tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds  ( Aesculus hippocastanum , buckeye , horse chestnut )
   tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds
     The horse chestnut tree displayed large, shiny brown nuts in the autumn.
   The horse chestnut tree displayed large, shiny brown nuts in the autumn.