鉄

malleable iron

armor plate; armour plate

iron staining

aqueous iron rust

hematite

marcasite

gunmakers guild

galvanized iron; galvanised iron

limonite; brown hematite

Sumo

strong push with only one hand

iron yeast; iron-enriched yeast

iron arrow-head (from the Yayoi and Kofun periods)

comet goldfish

Tiele people; a Central Asian Turkic people

sideroblast

siderite

deferrization; iron removal (using a magnet, etc.)

iron bacteria

mafic

Slang

mother who is interested in trains

vivianite

metal bowl

iron helmet

non-ferrous

lepidocrocite; esmeraldite