n.1917, "low, vulgar jazz," from jazz. Later in 20c. in use as a derogatorty term for persons, especially blacks. if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}