[{"word":"jackknifed","phonetics":[],"meanings":[{"partOfSpeech":"verb","definitions":[{"definition":"To fold in the middle, as a jackknife does.","synonyms":[],"antonyms":[],"example":"The cat jackknifed in the air and landed gracefully on its feet."},{"definition":"To cause a semi-trailer truck to fold like a jackknife in a traffic accident.","synonyms":[],"antonyms":[],"example":"Before I knew what was happening, I'd jack-knifed the truck."}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/jack-knife","https://en.wiktionary.org/wiki/jackknife","https://en.wiktionary.org/wiki/jackknifed"]}]