Meaning of pinworm

pin•worm

Pronunciation: (pin'wûrm"), [key]
— n.
  1. a small nematode worm, Enterobius vermicularis, infesting the intestine and migrating to the rectum and anus, esp. in children.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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