Saint Elmo's fire /ˈɛlməʊz/

• 1. 

  N (not in technical usage) a luminous region that sometimes appears around church spires, the masts of ships, etc. It is a corona discharge in the air caused by atmospheric electricity 圣-艾耳莫火; 教堂顶、船桅等上面区域放亮，为大气层生电而产生的光晕 (Also called corposant)