iron age

proper noun
  1. 1

    The most recent and debased of the four or five classical Ages of Man; hence, any period characterised by wicked behaviour.

  2. 2

    An age characterised by the use of iron.

  3. 3

    A level of culture in which Man used iron and the technology of ironworking. (Estimated to have begun in Europe about 1100 BCE)

Source: https://en.wiktionary.org/wiki/Iron%20Age, https://en.wiktionary.org/wiki/iron%20age