bellybutton
nounEtymology From belly + button.
1
Informal The navel or umbilicus.
- Always used to have pain about navel when a boy (used to call it bellybutton ache)[…]1909, The Boston Medical and Surgical Journal:
- Some people can’t even bear the thought of picking the fluff out of their bellybuttons - these people suffer from what is known as omphalophobia.2019 June 23, “Five phobias you didn’t know existed”, in BBC Bitesize: