핵

Etymology 1
.

Noun

 * 1) core, kernel; centre
 * 2)  atomic nucleus
 * 3)  cell nucleus
 * 4)  Earth's core
 * 5)  ring, such as a benzene ring
 * 1)  cell nucleus
 * 2)  Earth's core
 * 3)  ring, such as a benzene ring
 * 1)  Earth's core
 * 2)  ring, such as a benzene ring
 * 1)  ring, such as a benzene ring
 * 1)  ring, such as a benzene ring

Etymology 2
.

Noun

 * 1)  cheat program

Etymology 3
Korean reading of various Chinese characters.