Source : Webster's Revised Unabridged Dictionary (1913)

Helminth \Hel"minth\, n. [Gr. ?, ?, a worm.] (Zo["o]l.)
   An intestinal worm, or wormlike intestinal parasite; one of
   the Helminthes.

Source : WordNet®

helminth
     n : worm that is parasitic on the intestines of vertebrates
         especially roundworms and tapeworms and flukes [syn: {parasitic
         worm}]