A tapeworm is a long, flat parasite which lives in the stomach and intestines of animals or people.
tapeworm in British English
(ˈteɪpˌwɜːm)
noun
any parasitic ribbon-like flatworm of the class Cestoda, having a body divided into many egg-producing segments and lacking a mouth and gut. The adults inhabit the intestines of vertebrates
See also echinococcus, taenia
tapeworm in American English
(ˈteɪpˌwɜrm)
noun
any of various cestode flatworms that live in the adult stage as parasites in the intestines of humans and other vertebrates and in the larval stage usually in various intermediate hosts