The Collaborative International Dictionary of English v.0.48:

Luster \Lus"ter\ Lustre \Lus"tre\, n. [L. lustrum: cf. F.
   lustre.]
   A period of five years; a lustrum.
   [1913 Webster]

         Both of us have closed the tenth luster. --Bolingbroke.
   [1913 Webster] Luster

The Collaborative International Dictionary of English v.0.48:

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 perhaps a
   different word, and akin to L. lucere to be light or clear,
   to shine. See Lucid, and cf. Illustrious, Lustrum.]
   [1913 Webster]
   1. Brilliancy; splendor; brightness; glitter.
      [1913 Webster]

            The right mark and very true luster of the diamond.
                                                  --Sir T. More.
      [1913 Webster]

            The scorching sun was mounted high,
            In all its luster, to the noonday sky. --Addison.
      [1913 Webster]

   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.
         [1913 Webster]

   2. Renown; splendor; distinction; glory.
      [1913 Webster]

            His ancestors continued about four hundred years,
            rather without obscurity than with any great luster.
                                                  --Sir H.
                                                  Wotton.
      [1913 Webster]

   3. A candlestick, chandelier, girandole, or the like,
      generally of an ornamental character. --Pope.
      [1913 Webster]

   4. (Min.) The appearance of the surface of a mineral as
      affected by, or dependent upon, peculiarities of its
      reflecting qualities.
      [1913 Webster]

   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.
         [1913 Webster]

   5. A substance which imparts luster to a surface, as graphite
      and some of the glazes.
      [1913 Webster]

   6. A fabric of wool and cotton with a lustrous surface, --
      used for women's dresses.
      [1913 Webster]

   Luster ware, earthenware decorated by applying to the
      glazing metallic oxides, which acquire brilliancy in the
      process of baking.
      [1913 Webster] Luster

The Collaborative International Dictionary of English v.0.48:

Lustre \Lus"tre\, n.
   Same as Luster.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Luster \Lus"ter\, Lustre \Lus"tre\, v. t. [imp. & p. p.
   Lustred; p. pr. & vb. n. Lustering, or Lustring.]
   To make lustrous. [R. & Poetic]
   [1913 Webster]

         Flooded and lustered with her loosened gold. --Lowell.
   [1913 Webster]

WordNet (r) 3.0 (2006):

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

The Free On-line Dictionary of Computing (30 December 2018):

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)