Definitions
1.noun(heading) Chemical elements or alloys, and the mines where their ores come from.
2.nounA light tincture used in a coat of arms, specifically argent and or.
3.nounMolten glass that is to be blown or moulded to form objects.
4.nounA category of rock music encompassing a number of genres (including thrash metal, death metal, heavy metal, etc.) characterized by strong drum-beats and distorted guitars.
5.nounThe substance that constitutes something or someone; matter; hence, character or temper; mettle.
6.nounThe effective power or calibre of guns carried by a vessel of war.
7.noun(in the plural) The rails of a railway.
8.noun(travel) The actual airline operating a flight, rather than any of the codeshare operators."We have American Airlines tickets, but it's on British Airways metal."
9.verbTo make a road using crushed rock, stones etc.
10.nounThe rail tracks owned by a company or organisation; a rail network"It was appropriate that 'King' number 6000 began the return to steam on British Rail metals in 1971."