[{"word":"headroom","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The vertical clearance above someone's head, as in a tunnel, doorway etc.","synonyms":[],"antonyms":[]},{"definition":"The vertical measurement, top to bottom, for example for clearance under a bridge.","synonyms":[],"antonyms":[]},{"definition":"The ability of a system to reproduce loud sounds free of distortion; dynamic headroom.","synonyms":[],"antonyms":[]},{"definition":"The distance between the actual performance of an algorithm and its maximum possible performance.","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/headroom"]}]