noun
Japanese persimmon tree; kaki tree
Refers specifically to the tree that produces persimmons (Diospyros kaki). The fruit is usually called 柿 (かき).
庭に柿の木を植えた。
I planted a persimmon tree in the garden.
秋になると柿の木に実がたくさんなる。
In autumn, the persimmon tree bears a lot of fruit.
柿 refers to the persimmon fruit, while 柿の木 refers to the tree itself.
Compound of 柿 (kaki, 'persimmon') + の (possessive particle) + 木 (ki, 'tree'). The reading かきのき is straightforward.