noun: Iron, or similar metals worked by a blacksmith
noun: (music) A subgenre of heavy metal employing fast tempos, shrieked vocals, highly distorted guitars, double-kick drumming, raw recording and unconventional song structure, often emphasizing antireligious and misanthropic themes.
noun: (music, dated, 1980s and early 1990s) Any form of extreme metal having a Satanic or anti-Christian theme.
