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arc lamp (plural arc lamps)

  1. An electric arc arranged so as to produce useful light.
    Synonym: arclight
    • 1922, Michael Arlen, “Ep./1/2”, in “Piracy”: A Romantic Chronicle of These Days:
      He walked. To the corner of Hamilton Place and Picadilly, and there stayed for a while, for it is a romantic station by night. The vague and careless rain looked like threads of gossamer silver passing across the light of the arc-lamps.

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