[{"word":"avoirdupois","phonetic":"/ˌævɑːdjuːˈpwɑː/","phonetics":[{"text":"/ˌævɑːdjuːˈpwɑː/","audio":""},{"text":"/ˌævɚdəˈpɔɪz/","audio":""}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The official system of weights used in the UK between 1856 and 1963. It had been the customary system in London since 1300.","synonyms":[],"antonyms":[]},{"definition":"The official system of weights used in the USA between 1866 and 1959.","synonyms":[],"antonyms":[]},{"definition":"Weight; heaviness (commonly with humorous intent).","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/avoirdupois"]}]