n Any material with similar physical properties, such as an alloy.
n (astronomy) Any element other than hydrogen and helium,Majewski, S. R. (2003, 2006). [http://www.astro.virginia.edu/class/majewski/astr551/lectures/ABUNDANCES/abundances.html CHEMICAL ABUNDANCE EFFECTS ON SPECTRAL ENERGY DISTRIBUTIONS]. ASTR 551 (Majewski) Lecture Notes. or sometimes other than hydrogen.Martin, J. C. (n.d.). [http://etacar.umn.edu/~martin/rrlyrae/metals.htm What we learn from a star's metal content]
n Molten glass that is to be blown or moulded to form objects
n (music) A category of rock music encompassing a number of genres (including thrash metal, death metal, heavy metal, etc.) characterized by strong, fast drum-beats and distorted guitars.
n (archaic) The substance that constitutes something or someone; matter; hence, character or temper; mettle.
a (music) Characterized by strong, fast drum-beats and distorted guitars. (defdate|1970s and after)