The term “belly button” refers to the navel, named for its location on the belly and its button-like appearance.
The Origin of the Term “Belly Button”
The phrase “belly button” is a simple yet vivid way to describe the navel, a small, often recessed scar on the abdomen. But why exactly do we call it a belly button? The term combines two straightforward words: belly, meaning the abdomen or stomach area, and button, a small fastener often round and protruding slightly. The navel’s resemblance to a tiny button in the middle of the belly likely inspired this name.
Historically, this phrase has been used in English-speaking countries for centuries. The word belly comes from Old English belig, meaning “bag” or “pouch,” referring to the stomach area. Meanwhile, button derives from Old French bouton, meaning “a knob or small swelling.” When these two were put together, they perfectly captured the navel’s appearance—a small knob-like indentation or protrusion on the belly.
This simple naming reflects how humans often use familiar objects to describe body parts. The belly button looks like a tiny button sewn onto fabric—our skin—so the phrase stuck. It’s an easy, relatable way to refer to something universal across all humans.
Biological Basis Behind the Belly Button
The belly button is actually a scar left behind after birth. During fetal development, the umbilical cord connects a baby to its mother’s placenta, supplying nutrients and oxygen essential for growth. Once born, this lifeline is cut and clamped off, leaving behind a small stump that eventually heals into what we recognize as the navel.
There are two main types of belly buttons:
- Innie: The most common type where the skin folds inward.
- Outie: Less common; here, tissue protrudes outward slightly.
The shape depends on how the umbilical cord stump heals. While innies dominate globally (around 90% of people), outies occur due to variations in healing or minor hernias at birth.
This tiny scar serves no functional purpose after birth but remains as a permanent reminder of our prenatal connection. Its location in the center of our torso makes it an obvious “button” in our midsection—right where clothing often fastens or folds.
The Umbilical Cord: Why It Matters
The umbilical cord is more than just a tube; it contains two arteries and one vein protected by Wharton’s jelly—a gelatinous substance cushioning these vessels. This structure ensures safe transfer of blood between mother and fetus.
Once cut at birth, no more blood flows through it, so it dries up and falls off within one to two weeks. The skin then closes over this spot, creating your unique belly button.
Interestingly, no two belly buttons look exactly alike—much like fingerprints! The healing process varies due to genetics, cord length, and how tightly it was clamped.
Key Takeaways: Why Do They Call It A Belly Button?
➤ Also known as the navel.
➤ Marks the spot where the umbilical cord was attached.
➤ Varies in shape and size among individuals.
➤ Forms during fetal development.
➤ Commonly a focus of hygiene and body art.
Frequently Asked Questions
Why do they call it a belly button?
The term “belly button” comes from the navel’s location on the belly and its button-like appearance. It combines “belly,” meaning the abdomen, and “button,” referring to a small fastener, highlighting the navel’s resemblance to a tiny button on the stomach.
What is the origin of the phrase belly button?
“Belly button” has been used in English-speaking countries for centuries. The word “belly” derives from Old English meaning “bag” or “pouch,” and “button” comes from Old French meaning “a knob or small swelling.” Together, they describe the navel’s shape and position.
How does the belly button form during development?
The belly button is a scar left after birth where the umbilical cord was attached. This cord connected the baby to the mother’s placenta for nutrients. Once cut at birth, the remaining stump heals into what we know as the belly button.
Why does the belly button look like a button?
The belly button resembles a small button because it is a scar with a rounded or indented shape on the belly. This appearance inspired its name, as it looks like a tiny knob sewn onto our skin, much like a button on fabric.
Are there different types of belly buttons and why?
Yes, there are mainly two types: innies and outies. Innies fold inward and are more common, while outies protrude slightly due to how the umbilical cord stump heals or minor hernias at birth. Both types reflect variations in healing after birth.
Historical Perspectives on Naming Body Parts
Humans have long used everyday objects or familiar shapes to name body parts. Consider terms like “elbow” (from Old English elnboga, meaning “forearm bend”) or “eyebrow” (brow above eye). The belly button fits this tradition perfectly.
In many languages and cultures worldwide, names for the navel reflect similar imagery:
| Language | Term for Navel | Literal Meaning/Origin |
|---|---|---|
| English | Belly Button | Button-like bump on belly |
| Spanish | Ombligo | Derived from Latin umbilicus, meaning “navel” |
| Japanese | へそ (Heso) | Center or middle point of something |
| Hindi | Nabh (नाभि) | Sanskrit origin meaning “navel” or “center” |
| German | Bauchnabel | Belly (Bauch) + Navel (Nabel) |
| French | Bouton de ventre | “Button of stomach” |
This table shows that while some languages use descriptive terms like “button,” others rely on ancient roots referring directly to the navel itself without metaphorical imagery.