yǐ zhuàng jié cháng
sigmoid colon (anatomy)
bent colon, linking the descending colon to the rectum
乙
yǐ
second of the ten Heavenly Stems 十天干[shi2 tian1 gan1]
状
zhuàng
(bound form) form; appearance; shape
结
jié
knot
肠
cháng
intestines
