- an informal name for the navel
WordReference Random House Learner's Dictionary of American English © 2026
bel•ly•but•ton or bel•ly but•ton/ˈbɛliˌbʌtən/USA pronunciation
n. [countable] Informal.
WordReference Random House Unabridged Dictionary of American English © 2026- Informal Terms navel.
bel•ly•but•ton
(bel′ē but′n),USA pronunciation n. [Informal.]
- Informal Termsthe navel.
- belly + button 1875–80, American.
Collins Concise English Dictionary © HarperCollins Publishers::
'bellybutton' also found in these entries (note: many are not synonyms or translations):