- any of a genus (Aesculus) of shrubs and trees of the horse-chestnut family, including buckeyes; esp., a tree (A. hippocastanum) with large, palmately compound leaves, clusters of white flowers, and glossy, brown seeds
- a seed of this tree
designating a family (Hippocastanaceae, order Sapindales) of dicotyledonous trees, including the horse chestnuts
Origin of horse-chestnuttranslated, translation of obsolete botanical Classical Latin Castanea equina: reason for name uncertain
- Any of several trees of the genus Aesculus, especially the European species A. hippocastanum, having opposite, palmately compound leaves, erect clusters of white flowers tinged with red or yellow, and spiny or smooth capsules containing large shiny brown seeds.
- The seed of any of these plants.
Origin of horse chestnutPerhaps from a former use to cure cough in horses.
(plural horse chestnuts)
- Alternative spelling of horse chestnut.