A colon polyp is a growth on the surface of the colon, also called the large intestine. Sometimes, a person can have more than one colon polyp. Colon polyps can be raised or flat.

The large intestine is the long, hollow tube at the end of your digestive tract. The large intestine absorbs water from stool and changes it from a liquid to a solid. Stool is the waste that passes through the rectum and anus as a bowel movement...

FOR MORE DETAILS http://digestive.niddk.nih.gov/ddiseases/pubs/colonpolyps_ez/