[{"word":"letterbox","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A collection point for mail intended for onward delivery, a secure box or receptacle for this purpose.","synonyms":[],"antonyms":[]},{"definition":"A delivery point for mail, a box, compartment or slot for this purpose.","synonyms":[],"antonyms":[]},{"definition":"A hidden container that holds a logbook and rubber stamp, found by following clues.","synonyms":[],"antonyms":[]}],"synonyms":["mailbox","pillar box","post box","mail slot"],"antonyms":[]},{"partOfSpeech":"verb","definitions":[{"definition":"To transfer a widescreen motion picture to home video formats while preserving the original aspect ratio, with the placing of black bars above and below the picture area.","synonyms":[],"antonyms":[]},{"definition":"To hunt for letterboxes (containers with logbook and rubber stamp) by following clues.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]},{"partOfSpeech":"adjective","definitions":[{"definition":"Transferred to home video formats while preserving the original aspect ratio, having black bars above and below the picture area.","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/letterbox"]}]