from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An electrical discharge, or corona, seen around pointed objects, caused by ionization of the atmosphere during storms.
from the GNU version of the Collaborative International Dictionary of English
- n. See under Saint Elmo.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an electrical discharge accompanied by ionization of surrounding atmosphere
After St. Erasmus of Formiae, the patron saint of sailors, also known as St. Elmo. (Wiktionary)