宮
1
palace
2
tonic (of the Japanese and Chinese pentatonic scale)
See also:
五音 (ごいん)
3
ancient Chinese punishment (castration for men, or confinement for women)
See also:
宮刑 (きゅうけい)
4
zodiacal sign
See also:
十二宮 (じゅうにきゅう)