from The Century Dictionary.
- Of, pertaining to, or of the nature of iron; made of iron.
- In entomology, of a metallic-gray hue, like that of polished iron.
from the GNU version of the Collaborative International Dictionary of English.
- adjective obsolete Partaking of, made of, or pertaining to, iron; like iron.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Containing or resembling
Sorry, no etymologies found.
They were "ferreous freaks": vessels "made in foundries were sure to founder."
It is in this stuff, or sandy and ferreous cement, that the gold occurs.