The scientific name for a belly button is the umbilicus.
le nombril is the name for the belly button in French.
Yes. "Belly button" is another name for a person's naval.
Naval
Umbilical Knot 'Navel' is more common The "Navel" is the area around the "belly button"
Mr Bell-e-Button
Because it somewhat resembles a button and it is on your belly.
He was rumored to not have a belly button.
Out Belly Button
A belly button ring is a body piercing placed in a cauterized area of the belly button.
My belly button is located in the center of my abdomen.
The belly button origin came from a naval clamp. this new type of clamp was invented in 1860. It's shape was round and had 4 holes just like a button. After awhile the name just stuck. I have one of the belly button navel clamps in my collection. they are very rare because these were always thrown out.