D defs.my
Entry 1 sense Webster, 1913

Drummond light

/drŭm'-ənd līt/ · Drum·mond light · IPA
01 A very intense light, produced by turning two streams of gas, one oxygen and the other hydrogen, or coal gas, in a state of ignition, upon …
  1. 1.
    A very intense light, produced by turning two streams of gas, one oxygen and the other hydrogen, or coal gas, in a state of ignition, upon a ball of lime; or a stream of oxygen gas through a flame of alcohol upon a ball or disk of lime; -- called also oxycalcium light, or lime light. Also: oxycalcium light, lime light