資料來源 : Webster's Revised Unabridged Dictionary (1913)

Bengal \Ben*gal"\, n.
   1. A province in India, giving its name to various stuffs,
      animals, etc.

   2. A thin stuff, made of silk and hair, originally brought
      from Bengal.

   3. Striped gingham, originally brought from Bengal; Bengal
      stripes.

   {Bengal light}, a firework containing niter, sulphur, and
      antimony, and producing a sustained and vivid colored
      light, used in making signals and in pyrotechnics; --
      called also {blue light}.

   {Bengal stripes}, a kind of cotton cloth woven with colored
      stripes. See {Bengal}, 3.

   {Bengal tiger}. (Zo["o]l.). See {Tiger}.

資料來源 : WordNet®

Bengal light
     n : a steady bright blue light; formerly used as a signal but
         now a firework