[{"word":"cassiterite","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A generally black mineral, composed of tin oxide, SnO2, which is an important ore of tin.","synonyms":[],"antonyms":[]}],"synonyms":["stream tin","tinstone","wood tin"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/cassiterite"]}]