A member of the genus Enterobius or related genera of nematodes in the family Oxyuridae, abundant in a large variety of vertebrates, including such species as Oxyuris equi (the horse p.), Enterobius vermicularis (the human p.), Syphacia and Aspiculuris species (the mouse p.), Passalurus ambiguus (the rabbit p.), and Syphacia muris (the rat p.). SYN: seatworm.
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pin·worm 'pin-.wərm n any of numerous small nematode worms of the family Oxyuridae that have the tail of the female prolonged into a sharp point and infest the intestines and esp. the cecum of various vertebrates esp a worm of the genus Enterobius (E. vermicularis) that is parasitic in humans
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n.
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pin·worm (pinґwurm″) oxyurid.Medical dictionary. 2011.