The doctor concluded that her stomach pains were due to irritable bowel syndrome.

I beseech you, in the bowels of Christ, think it possible you may be mistaken.

Begone, wretched spawn of Hell's unholy bowels!

And immediately the word of the Lord came to him, saying : He shall not be thy heir: but he that shall come out of thy bowels, him shalt thou have for thy heir.

It moves the bowels.

I have trouble with my bowels.

Do you have regular bowel movements?

What color are your bowel movements?

Tom was diagnosed with irritable bowel syndrome.

I told him about my bowels problems.