of St. Elmo's Fire (for which see saint (n.)); probably from Greek elene "torch," via an apocryphal saint. if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}