Lightning visible in the form of wavy or broken lines.(noun)
The Century Dictionary (Public Domain)
Use "chain-lightning" in a sentence
"Last night, more of it: the second scariest storm of my life, with chain-lightning and banging thunder, pounding rain and high velocity wind."
"He was significantly younger than the other two; a crewcut man of average height and average build whose lean face would have been completely forgettable if not for the chain-lightning that seemed to flash behind his dark, hate-filled eyes."
"The only thing to really make an impression on him once the riddling began in earnest was the fire flashing from the stone eyes of the Hounds; as he raised his hand to shield his eyes from that chain-lightning glare, he thought of the Portal of the Beam in the Clearing of the Bear, how he had pressed his ear against it and heard the distant, dreamy rumble of machinery."