We found 15 dictionaries that define the word pinworms:

General (8 matching dictionaries)

1. pinworms: Merriam-Webster
2. pinworms: Collins English Dictionary
3. pinworms: Vocabulary.com
4. pinworms: Wordnik
5. pinworms: Wiktionary
6. pinworms: Dictionary.com
7. Pinworms: Wikipedia, the Free Encyclopedia
8. Pinworms: TheFreeDictionary.com

Computing (1 matching dictionary)

9. Pinworms: Encyclopedia

Medicine (6 matching dictionaries)

10. pinworms: Merriam-Webster Medical Dictionary
11. Health and Wellness Dictionary (No longer online)
12. Pinworms: MEDLINE plus Illustrated Medical Encyclopedia
13. pinworms: Parents' Common Sense Encyclopedia
14. Pinworms: Medical dictionary
15. University of Maryland Glossary of Medical Terms (No longer online)

(Note: See pinworm as well.)

Definitions from Wiktionary (pinworm) ▸ noun:  Any of several nematode worms, of the family Oxyuridae, that are parasitic to mammals ▸ Also see pinworm Opposite: tapeworms, roundworms, hookworms ▸ Words similar to pinworms ▸ Usage examples for pinworms ▸ Idioms related to pinworms ▸ Wikipedia articles (New!) ▸ Popular adjectives describing pinworms ▸ Words that often appear near pinworms ▸ Rhymes of pinworms ▸ Invented words related to pinworms