[{"word":"frontiers","phonetics":[{"audio":"https://api.dictionaryapi.dev/media/pronunciations/en/frontiers-us.mp3","sourceUrl":"https://commons.wikimedia.org/w/index.php?curid=2650973","license":{"name":"BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"}}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The part of a country which borders or faces another country or unsettled region","synonyms":[],"antonyms":[]},{"definition":"The most advanced or recent version of something; leading edge.","synonyms":[],"antonyms":[],"example":"the frontier of civilization"},{"definition":"An outwork of a fortification.","synonyms":[],"antonyms":[]}],"synonyms":["border","marches"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/frontier","https://en.wiktionary.org/wiki/frontiers"]}]