threadworm

from WordNet (r) 3.0 (2006)
threadworm
    n 1: small threadlike worm infesting human intestines and rectum
         especially in children [syn: {pinworm}, {threadworm},
         {Enterobius vermicularis}]
from The Collaborative International Dictionary of English v.0.48
Threadworm \Thread"worm`\, n. (Zool.)
   Any long, slender nematode worm, especially the pinworm and
   filaria.
   [1913 Webster]
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