bellybutton

or bel·ly but·ton

[ bel-ee-buht-n ]
/ ˈbɛl iˌbʌt n /

noun Informal.

the navel.

Origin of bellybutton

An Americanism dating back to 1875–80; belly + button
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for belly button

bellybutton

/ (ˈbɛlɪˌbʌtən) /

noun

an informal name for the navel

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for belly button

bellybutton

[ bĕlē-bŭt′n ]

n.

navel

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.