[{"word":"knuckleball","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A pitch thrown with the ball gripped on the fingertips and released with no rotation, which travels over an unpredictable path to the plate due to micro-turbulence in the air.","synonyms":[],"antonyms":[],"example":"Boston Red Sox pitcher Tim Wakefield is best known for his use of the knuckleball."},{"definition":"An event that is hard to predict.","synonyms":[],"antonyms":[],"example":"Our vendor keeps throwing us knuckleballs."}],"synonyms":["bug","butterfly ball","dancer","floater","flutterball","ghostball"],"antonyms":[]},{"partOfSpeech":"verb","definitions":[{"definition":"To pitch knuckleballs.","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/knuckleball"]}]