[{"word":"pacemaker","phonetic":"/ˈpeɪsˌmeɪkəɹ/","phonetics":[{"text":"/ˈpeɪsˌmeɪkəɹ/","audio":"https://api.dictionaryapi.dev/media/pronunciations/en/pacemaker-us.mp3","sourceUrl":"https://commons.wikimedia.org/w/index.php?curid=1785220","license":{"name":"BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"}}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"One who sets the pace in a race, to guide the others.","synonyms":[],"antonyms":[]},{"definition":"A set of nerves which stimulate the heart to beat.","synonyms":[],"antonyms":[]},{"definition":"(hence) A medical implement that is used to stimulate a heart to beat by simulating the action of the natural pacemaker.","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/pacemaker"]}]