tank iron

1. 1.

   plate iron that is thinner than boilerplate but thicker than sheet iron or stovepipe iron

   Broaderplate iron

Questions about tank iron

What does tank iron mean?

tank iron means "plate iron that is thinner than boilerplate but thicker than sheet iron or stovepipe iron".

Is tank iron a common word?

tank iron is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.