Emily Dickinson Lexicon

I'RON, a.

1. Made of iron; consisting of iron; as, an iron gate; an iron bar; iron dust.
2. Resembling iron in color; as, an iron gray color.
3. Harsh; rude; severe; miserable; as, the iron age of the world. Iron years of wars and dangers. Rowe. Jove crush'd the nations with an iron rod. Pope.
4. Binding fast; not to be broken; as, the iron sleep of death. Philips.
5. Hard of understanding; dull; as, an iron witted fool. Shak.
6. Firm; robust; as, an iron constitution.