We found 24 dictionaries that define the word belly button:

General (14 matching dictionaries)

1. belly button: Merriam-Webster
2. belly button: Oxford Learner's Dictionaries
3. belly button: Vocabulary.com
4. belly-button: Wordnik
5. belly button: Cambridge Advanced Learner's Dictionary
6. belly-button, belly button: Wiktionary
7. belly button: Dictionary.com
8. Belly Button, Belly button (disambiguation), Belly button: Wikipedia, the Free Encyclopedia
9. belly button: FreeDictionary.org
10. belly button: Mnemonic Dictionary
11. belly button: TheFreeDictionary.com
12. belly button: Longman Dictionary of Contemporary English

Art (2 matching dictionaries)

13. Body Piercing Glossary (No longer online)
14. Body Piercing Glossary (No longer online)

Computing (2 matching dictionaries)

15. belly-button: Netlingo
16. Belly button: Encyclopedia

Medicine (5 matching dictionaries)

17. belly button: Merriam-Webster Medical Dictionary
18. Belly button: MedTerms.com Medical Dictionary
19. online medical dictionary (No longer online)
20. belly button: Medical dictionary
21. Belly button: Drug Medical Dictionary

Slang (1 matching dictionary)

22. belly-button: Urban Dictionary

Definitions from Wiktionary (belly button) ▸ noun:  (informal) The navel. Similar: bellybutton, navel string, navel-string, chest button, navel point, bellyring, bellyband, navel, navel gall, flattie, more... Opposite: back, spine, rear, posterior Phrases: belly button type, protruding belly button, more... Adjectives: umbi, outie, umbilic, omphalic, umbilicated, polygastric, abdominal, physogastric, natal, hilal, abbed ▸ Words similar to belly button ▸ Usage examples for belly button ▸ Idioms related to belly button ▸ Wikipedia articles (New!) ▸ Words that often appear near belly button ▸ Rhymes of belly button ▸ Invented words related to belly button