ὀμφᾰλός (omphalós) From Wikipedia, the free encyclopedia An omphalos is a religious stone artifact, or baetylus Ancient Greek, the word ὀμφᾰλός (omphalós) means "navel Greek lore, Zeus sent two eagles across the world to meet at its centre, the "navel" of the world. Among the Ancient Greeks, it was a widespread belief that Delphi was the center of the world. According to the myths regarding the ..