navelEnglishOxford English Thesaurusnavel noun 1 informal belly button, tummy button; technical umbilicus. 2 Cyprus was the navel of Byzantine culture: centre, central point, middle, midpoint, hub, nub, focal point, focus, pivot, nucleus, heart, core, eye; rare omphalos.word linksnavelumbilical relating to the navelomphalo- related prefix, as in omphalocelenavel Oxford Dictionary of English