果核 is read as かかく (kakaku) and means putamen.
かかく
kakaku
かくか
drupe
かじゅ
fruit tree
かかん
resolute
かじゅう
fruit juice
かじゅえん
orchard
かじつしょくしゅぎ
fruitarianism
はたせるかな
as expected
かじゅけんきゅうじょ
National Institute of Fruit Tree Science
かじゅえんげいがく
pomology
かじゅえんげい
fruit growing
ちゅうかく
kernel
かく
(planetary) core