Made of iron; consisting of iron; as an iron gate; an iron bar; iron dust.

1. Resembling iron in color; as an iron gray color.

2. Harsh; rude; severe; miserable; as the iron age of the world.

Iron years of wars and dangers.

Jove crush'd the nations with an iron rod.

3. Binding fast; not to be broken; as the iron sleep of death.

4. Hard of understanding; dull; as an iron witted fool.

5. Firm; robust; as an iron constitution.