Kastanie

Etymology
From, corrupted by 🇨🇬, from , , from.

Noun

 * 1) chestnut
 * 2) a tree of the genus, or its nut
 * 3) horse-chestnut, a tree of the genus, or its nut

Usage notes

 * In biological terminology, the simplex refers to the genus, while  must be specified as . However, in non-specialist use it is often the horse-chestnut which is thought of as the proto-typical.