Manchurian walnut
A deciduous tree native to East Asia, producing edible nuts with hard shells. The scientific name is Juglans mandshurica.
The fruit of the Manchurian walnut is encased in a hard shell.
There is a large Manchurian walnut tree in the park.
Katakana spelling is common for this plant name; usually written in kana.
Kanji spelling exists but is rarely used; the katakana form is preferred.
The name オニグルミ (onigurumi) literally means 'ogre walnut', likely referring to the hard, tough shell of the nut. The exact origin of the name is uncertain.