What does the word navel mean?

Usage examples for navel

  1. Figures 11 and 12 show two stages of Navel Rupture. – Cluthe's Advice to the Ruptured by Chas. Cluthe & Sons
  2. Then if they find an opening or even a weak spot, like the ring of the navel while it is undergoing the process of becoming blocked up, they select it and a rupture is produced. – The Veterinarian by Chas. J. Korinek