- An electric arc arranged so as to produce useful light.
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.
an electric arc arranged so as to produce useful light