Source : Webster's Revised Unabridged Dictionary (1913)

Luster \Lus"ter\, Lustre \Lus"tre\, n. [F. lustre; cf. It.
   lustro; both fr. L. lustrare to purify, go about (like the
   priests at the lustral sacrifice), traverse, survey,
   illuminate, fr. lustrum a purificatory sacrifice; perh. akin
   to E. loose. But lustrare to illuminate is perh. a different
   word, and akin to L. lucere to be light or clear, to shine.
   See {Lucid}, and cf. {Illustrious}, {Lustrum}.]
   1. Brilliancy; splendor; brightness; glitter.

            The right mark and very true luster of the diamond.
                                                  --Sir T. More.

            The scorching sun was mounted high, In all its
            luster, to the noonday sky.           --Addison.

   Note: There is a tendency to limit the use of luster, in this
         sense, to the brightness of things which do not shine
         with their own light, or at least do not blaze or glow
         with heat. One speaks of the luster of a diamond, or of
         silk, or even of the stars, but not often now of the
         luster of the sun, a coal of fire, or the like.

   2. Renown; splendor; distinction; glory.

            His ancestors continued about four hundred years,
            rather without obscurity than with any great luster.
                                                  --Sir H.
                                                  Wotton.

   3. A candlestick, chandelier, girandole, or the like,
      generally of an ornamental character. --Pope.

   4. (Min.) The appearance of the surface of a mineral as
      affected by, or dependent upon, peculiarities of its
      reflecting qualities.

   Note: The principal kinds of luster recognized are: metallic,
         adamantine, vitreous, resinous, greasy, pearly, and
         silky. With respect to intensity, luster is
         characterized as splendent, shining, glistening,
         glimmering, and dull.

   5. A substance which imparts luster to a surface, as plumbago
      and some of the glazes.

   6. A fabric of wool and cotton with a lustrous surface, --
      used for women's dresses.

   {Luster ware}, earthenware decorated by applying to the
      glazing metallic oxides, which acquire brilliancy in the
      process of baking.

Luster \Lus"ter\, Lustre \Lus"tre\, v. t. [imp. & p. p.
   {Lustred}; p. pr. & vb. n. {Lustering}, or {Lustring}.]
   To make lustrous. [R. & Poetic]

         Flooded and lustered with her loosened gold. --Lowell.

Lustre \Lus"tre\, n.
   Same as {Luster}.

Source : WordNet®

lustre
     n 1: a surface coating for ceramics or porcelain [syn: {luster}]
     2: a quality that outshines the usual [syn: {luster}, {brilliancy},
         {splendor}, {splendour}]
     3: the visual property of something that shines with reflected
        light [syn: {shininess}, {sheen}, {luster}]
     [also: {lustra} (pl)]

Source : Free On-Line Dictionary of Computing

LUSTRE
     
        (A French acronym for Synchronous real-time Lucid).  Real-time
        dataflow language for synchronous systems, especially
        automatic control and signal processing.  A {Lucid} subset,
        plus timing operators and user-defined clocks.
     
        Designed for automatic control applications.  It is based on
        the idea that automatic control engineers use to analyse, and
        specify their systems in terms of functions over sequences
        (sampled signals).  It thus seems both safe and cost effective
        to try to compile directly those descriptions into executable
        code.  A lot of work has been done, so as to get efficient
        compilation, and also in formal verification.  The language
        has been used in nuclear plant control, and will be used in
        aircraft control.
     
        ["Outline of a Real-Time Data-Flow Language", J.-L. Bergerand
        et al, Proc IEE-CS Real Time Systems Symp, San Diego, IEEE Dec
        1985, pp. 33-42].
     
        ["LUSTRE: A Declarative Language for Programming Synchronous
        Systems", P. Caspi et al, Conf Rec 14th Ann ACM Symp on Princ
        Prog Langs, 1987].
     
        (1994-10-12)