Definition of pinworm in US English:



  • A small nematode worm which is an internal parasite of vertebrates.

    Family Oxyuridae, class Phasmida, including Enterobius vermicularis (in humans) and Oxyuris equi (in horses)

    • ‘When I checked it out, I knew right away they were pinworms.’
    • ‘You can get pinworms by unknowingly swallowing microscopic pinworm eggs.’
    • ‘If your child has ascariasis, she should be evaluated for other intestinal parasites, such as pinworm.’
    • ‘Threadworms, or pinworms, are small intestinal worm parasites.’
    • ‘Everyone in your house should take the drugs even if they do not have pinworms.’