Tapeworm means: Tapeworm is a worm flattened like a tape-measure and acts as an intestinal parasite. It cannot live on its own, but can live in an animal’s stomach.
(in Medical Dictionary)

What else does Tapeworm mean?

All long-segmented parasitic flatworms belonging to the Class Cestoda. They lack a digestive system, but have hooks and suckers that attach to the intestines.
(in Merlin Dictionary)