pinworm

(pinwʉrm′)

noun

any of various parasitic nematode worms, esp. a species (Enterobius vermicularis) often found in the human rectum and large intestine, esp. in children

See pinworm in American Heritage Dictionary 4

noun
Any of various small nematode worms of the family Oxyuridae that are parasitic on horses, rabbits, and other mammals, especially Enterobius vermicularis, a species that infests the human intestines and rectum. Also called threadworm.

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