the GNU version of the Collaborative International Dictionary of English
n. The depression in the middle of the abdomen in humans left as a residue of the umbilical cord; the umbilicus; the navel{1}.
The Century Dictionary and Cyclopedia
n. The navel.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a scar where the umbilical cord was attached
n. a scar where the umbilical cord was attached
Word Usage
"When we ask you what time it is (in either Spanish or English) you look up to the clock, and when we say "bellybutton" you grab your navel and laugh."