Definition of tapeworms:
(n) :
(countable) Any parasitical worm of the class or infraclass Cestoda, which infests the intestines of animals, including humans, often infecting different host species during their life cycle.
(n) :
(uncountable) Infection by tapeworms.
(n) :
(countable) A broad fish tapeworm, Diphyllobothrium latum.
(v) :
(transitive) To treat (an animal) for tapeworm infection.
(v) :
(intransitive) To move along in a wriggling manner, like a tapeworm.