tapeworm

Short definition from Wiktionary

Noun

1. 1
   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.
2. 2
   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: A broad fish tapeworm, Diphyllobothrium latum.
3. 3
   Infection by tapeworms.

Verb

1. 1
   To move along in a wriggling manner, like a tapeworm.
2. 2
   To treat (an animal) for tapeworm infection.