[{"word":"pacemakers","phonetics":[],"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","https://en.wiktionary.org/wiki/pacemakers"]}]