[{"word":"umbilicus","phonetic":"/ʌmbɪˈlʌɪkəs/","phonetics":[{"text":"/ʌmbɪˈlʌɪkəs/","audio":""}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"Navel","synonyms":[],"antonyms":[]},{"definition":"Hilum","synonyms":[],"antonyms":[]},{"definition":"A depression or opening in the center of the base of many spiral shells.","synonyms":[],"antonyms":[]},{"definition":"Either of the two apertures in the calamus of a feather.","synonyms":[],"antonyms":[]},{"definition":"A tube connecting an astronaut or spacecraft to the mothership, through which supplies and samples can be transferred.","synonyms":[],"antonyms":[]},{"definition":"One of the foci of an ellipse or other curve.","synonyms":[],"antonyms":[]},{"definition":"A point of a surface at which the curvatures of the normal sections are all equal to each other.","synonyms":[],"antonyms":[],"example":"A sphere may be osculatory to the surface in every direction at an umbilicus."},{"definition":"An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled.","synonyms":[],"antonyms":[]}],"synonyms":["omphalos","omphalus"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/umbilicus"]}]