What is the definition of Arclight?

An 'arclight' is a bit of a double-edged sword, like a magic wand that can either illuminate your path with the brilliance of a thousand suns or blind you with the glare of a thousand neon signs. It's the kind of light that makes your eyes feel like they're in a sci-fi movie where the only stars are flickering neon signs.

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Now, here's an edgy sentence using this light: "With an arclight on, I turned off the only human emotion in the room and started chasing shadows that looked suspiciously like my ex."