What is another word for tape worm?

There isn't really a single perfect synonym for "tapeworm" because it's a specific type of parasite. However, depending on the context, you could use some of these options:

* Cestode: This is the scientific term for tapeworms, and it is often used in medical and scientific contexts.

* Parasite: This is a broader term that refers to any organism that lives in or on another organism and benefits at its expense.

* Intestinal worm: This is a general term for any worm that lives in the intestines of an animal, including tapeworms.

* Flatworm: This is a broader term that includes tapeworms, but also other types of flatworms such as flukes.

The best word to use will depend on the specific context of your writing.