Appendix
noun, の adjective
Which of your guts is blind? Your appendix. That's why so many people have to get them out. It's in there blind, bumping around, messing things up.
もうちょう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
手術で盲腸を取ってしまいました。
My appendix had to be surgically removed.