1. 
   Belly button
   Belly button: The navel or umbilicus. The one-time site of attachment of the umbilical cord. The term 'belly button' was coined around 1877.
   Found op http://www.medterms.com/script/main/art.html?articlekey=2448
   
   
2. 
   belly button
   The navel or umbilicus. The one-time site of attachment of the umbilical cord. The term belly button was coined around 1877. ... (12 Dec 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?belly+button
   
   
3. 
   belly button
   Type: Term Pronunciation: bel′ē bŭt′ŏn Synonyms: umbilicus
   Found op http://www.medilexicon.com/medicaldictionary.php?t=9922
   
   
4. 
   Belly Button
   The indentation in the middle of the stomach or abdomen, that leaves the small hole, which can be classified as an inny or outty. This is the point of attachment to the umbilical cord while in utero. Synonym(s): Navel Umbilicus
   Found op http://www.pregnology.com/AZ/B/2
   
   
5. 
   Bellybutton
   [album] (1990) Bellybutton is the debut album by Jellyfish, released on August 7, 1990. The album spawned the singles "The King Is Half-Undressed" (reached No. 19 on Billboard`s Modern Rock Chart), "That Is Why" (reached No. 11 on Billboard`s Modern Rock Chart), "Baby`s Coming Back" (reached...
   Found op http://en.wikipedia.org/wiki/Bellybutton_(album)
   
   
6. 
   bellybutton
   1) Adam didnt have one 2) Navel 3) Omphalos 4) Omphalus 5) Point 6) Umbilicus
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/bellybutton/1
   
   

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