Webster's Revised Unabridged Dictionary · 1913

Navel

Navel (nā"v'l) , noun

[Anglo-Saxon nafela, from nafu nave; akin to Dutch navel, German nabel, Old High German nabolo, Icelandic nafli, Danish navle, Swedish nafle, Latin umbilicus, Greek 'omfalo`s, Sanskrit nābhīla. r260. See Nave hub, and compare Omphalic, Nombril, Umbilical.]

1.
(Anatomy) A mark or depression in the middle of the abdomen; the umbilicus; called also belly button in humans. See Umbilicus.
2.
The central part or point of anything; the middle.
Within the navel of this hideous wood, Immured in cypress shades, a sorcerer dwells. — Milton
3.
(Gunnery) An eye on the under side of a carronade for securing it to a carriage.
Collocations (2)
Navel gall , a bruise on the top of the chine of the back of a horse, behind the saddle. — Johnson
Navel point (Heraldry) , Same as Nombril.