4 Old HSK word(s): ☊骨头 ** B ☊骨干 ** C ☊骨 ** D ☊骨肉 ** D
白骨* * 耻骨* * 刺/次骨* * 脆骨* * 粉身碎骨* * 骨* * 股骨* * 寒风刺骨* * 颌骨* * 恨之入骨* * 肩胛骨* * 接骨* * 筋骨* * 脊椎骨* * 刻骨* * 胯骨* * 肋骨* * 颅骨* * 露骨* * 排骨* * 皮包骨* * 颧骨* * 软骨* * 身子骨* * 尸骨* * 锁骨* * 头盖骨* * 头骨* * 脱胎换骨* * 膝盖骨* * 主心骨* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

主 master, chief owner / host / lord
心 heart / mind, intelligence / soul
骨 bone / skeleton / frame, framework

Hsk Characters: 骨 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
骨 9AA8 + 骨 + + bone / skeleton / frame, framework 骨 骨 Bones 骨 (KNOCHEN) gu3 +

Korean:

骨 + 骨 뼈골 (bones)
2 NHSK word(s): 骨头* 5 gu3 tou5bone/ strong character/ CL:根[gen1];塊|块[kuai4] 骨干* 6 gu3 gan4diaphysis (long segment of a bone)/ fig. backbone
KOREAN6000 word(s):
1 KOREAN 2500 New HSK words):
骨头 + gǔtou 뼈. ppyeo.
0 KOREAN Sentence(s):