of St. Elmo's Fire (for which see saint (n.)); probably from Greek elene "torch," via an apocryphal saint.
Examples from the Web for elmo
Is that where the Elmo voice came from in Five-Year Engagement?Alison Brie on ‘Community’s’ New Beginning, Dan Harmon’s Return, Nicolas Cage, and More|Marlow Stern|January 3, 2014|DAILY BEAST
During the visit, Clash told S.M. that he was the voice of Elmo on Sesame Street, the lawsuit states.
“I feel kind of bad that the media put his sexuality out there and destroyed the product of Elmo,” he added.‘I Always Felt It Was Creepy’: Stories of Sex With Elmo Puppeteer Kevin Clash|Maria Elena Fernandez|December 6, 2012|DAILY BEAST
Push a button and Elmo cackles before asking what sounds unmistakably like, “Who wants to die?”
Guys, it distinctly says “tickle me” Elmo, not “hand-to-hand combat over me” Elmo.
Mr. and Mrs. Aldrich have become parents of two children, Elmo and Erick.Lyman's History of old Walla Walla County, Vol. 2 (of 2)|William Denison Lyman
Elmo's Fire, St., a meteoric appearance often seen playing about the masts and rigging of ships.The New Gresham Encyclopedia|Various
There shone a star—three stars and on topmast and bowsprit Saint Elmo's lights.1492|Mary Johnston