A person’s navel.
More example sentences
- You will be left with a scar around the tummy button and a long scar along the bikini line, which can usually be hidden within your underwear.
- The symptoms of appendicitis can vary, but they usually start with a pain in the middle of the abdomen, around the tummy button, that comes and goes.
- She was a wearing baby doll pyjamas with the top falling far short of her tummy button.