horse chestnut; conker
Refers specifically to the nut of the Japanese horse chestnut tree (Aesculus turbinata). Often used in contexts of foraging, traditional food (after leaching), or children's play.
In autumn, children pick up horse chestnuts and play with them.
Horse chestnuts can be eaten after removing their bitterness.
Standard kanji spelling for 'horse chestnut'.
Alternate kanji for 栃; less common in modern usage.
栃 (tochi) refers to the Japanese horse chestnut tree, and 実 (mi) means 'nut' or 'fruit'. The reading とちのみ is a straightforward compound.