痔核 is read as じかく (jikaku) and means hemorrhoid.
じかく
jikaku
じ
hemorrhoids
ちゅうかく
kernel
かく
(planetary) core
けっかく
concretion
はいけっかく
pulmonary tuberculosis
げんしかく
nucleus
ちゅうしんかく
core (of planets, stars, galaxies, etc.)
かいほうせいけっかく
open tuberculosis
にかく
binuclear
ないかく
inner core (of Earth)
ちかく
(Earth's) core
がいかく
outer core (of Earth)