umbilicus
um.bi.li.cus \.*m-'bil-i-k*s, .*m-b*-'li--\ \-'bil-*-.ki-, -.ke-, -.si-; -'li--.ki-, -.si-\ n or um.bi.li.ci or um.bi.li.cus.es [L - more at NAVEL] pl 1a: a small depression in the abdominal wall at the point of attachment of the umbilical cord to the embryo 1b: any of several morphological depressions; esp : HILUM 2: a central point : CORE, HEART