[ad_1] adj.1800, from chivalry on analogy of French chevalresque, from chevalier (see chevalier). if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');} [ad_2]