[{"word":"umbo","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane. For example the umbo in the integument of the larvæ of echinoderms or in the tympanic membrane of the ear.","synonyms":[],"antonyms":[]},{"definition":"One of the lateral prominences just above the hinge of a bivalve shell.","synonyms":[],"antonyms":[]},{"definition":"A bump or protrusion on the top of the cap.","synonyms":[],"antonyms":[]},{"definition":"The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/umbo"]}]