The Collaborative International Dictionary of English v.0.48:

Bronze \Bronze\, n. [F. bronze, fr. It. bronzo brown, fr. OHG.
   br?n, G. braun. See Brown, a.]
   1. An alloy of copper and tin, to which small proportions of
      other metals, especially zinc, are sometimes added. It is
      hard and sonorous, and is used for statues, bells, cannon,
      etc., the proportions of the ingredients being varied to
      suit the particular purposes. The varieties containing the
      higher proportions of tin are brittle, as in bell metal
      and speculum metal.
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   2. A statue, bust, etc., cast in bronze.
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            A print, a bronze, a flower, a root.  --Prior.
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   3. A yellowish or reddish brown, the color of bronze; also, a
      pigment or powder for imitating bronze.
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   4. Boldness; impudence; "brass."
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            Imbrowned with native bronze, lo! Henley stands.
                                                  --Pope.
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   Aluminium bronze. See under Aluminium.

   Bronze age, an age of the world which followed the stone
      age, and was characterized by the use of implements and
      ornaments of copper or bronze.

   Bronze powder, a metallic powder, used with size or in
      combination with painting, to give the appearance of
      bronze, gold, or other metal, to any surface.

   Phosphor bronze & Silicious bronze or Silicium bronze
      are made by adding phosphorus and silicon respectively to
      ordinary bronze, and are characterized by great tenacity.
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WordNet (r) 3.0 (2006):

Bronze Age
    n 1: (archeology) a period between the Stone and Iron Ages,
         characterized by the manufacture and use of bronze tools
         and weapons
    2: (classical mythology) the third age of the world, marked by
       war and violence