noun. small threadlike worm infesting human intestines and rectum especially in children.
1. Noun, singular or mass The first thing you should do when trying to treat your threadworm infestation is to make sure not to spread it around and become infested again or pass it to others. 2. Adjective Mucus in the stool is also a sign of threadworm infection. 3. Verb, past participle Threadworms can survive in swimming pools so it is important not to swim if you have threadworm, otherwise you could contaminate the water.