ὀμφαλός

Etymology
From, from. Cognates include 🇨🇬, 🇨🇬, and 🇨🇬 (🇨🇬).

Noun

 * 1)  navel
 * 2) umbilical cord
 * 3) anything shaped like a navel, hence:
 * 4) knob or boss in the middle of the shield
 * 5) button or knob on the horse's yoke to fasten the reins to
 * 6) plug or valve closing the outlet of bath
 * 7)  knobs at each end of the stick round which books were rolled
 * 8) centre or middle point
 * 9)  centre of a plant, containing the seed vessel
 * 10) centre of an army, properly the point at which an army is divided into two wings
 * 11)  keystone of an arched vault
 * 12)  vault, tomb