Iron - Vine's Expository Dictionary of New Testament Words
Iron
[ A-1,Noun,G4604, sideros ]iron," occurs in Revelation 18:12.
[ B-1,Adjective,G4603, sidereos ]
"of iron," occurs in Acts 12:10, of an iron gate; "of iron," Revelation 2:27; Revelation 9:9; Revelation 12:5; Revelation 19:15.