1.  bronze age(n = noun.time) - (archeology) a period between the Stone and Iron Ages, characterized by the manufacture and use of bronze tools and weapons;
is a kind of period, period of time, time period
is a part of prehistoric culture, prehistory

2.  bronze age(n = noun.time) - (classical mythology) the third age of the world, marked by war and violence;
is a kind of period, period of time, time period

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