(simile) very hard

Alternative form of cold steel (“swords, knives, bladed weapons”)

siderite

plural of ripping iron

A caulker's claw-like tool for tearing oakum out of a seam, or stripping copper or sheathing from a ship's bottom.

plural of steely iron

A mountainous area of northeast Minnesota noted for iron production.

(historical) A tool used to goffer textiles or to smooth ruffles or frills.

pig iron suitable for making Bessemer steel

plural of Bessemer iron