Large Intestine, Large Bowel, Colon
noun, の adjective
The big intestines are called the large intestine, or the colon. It's where your poop goes and comes from!
だいちょう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
大腸がんが見つかりました。
They found large intestine cancer.