heavy metal

heavy metal

noun
1.
any metal with a specific gravity of 5.0 or greater, especially one that is toxic to organisms, as lead, mercury, copper, and cadmium.
2.
aggressive and heavily amplified rock music, commonly performed by groups that wear spectacular or bizarre costumes.

Origin:
1860–65, for literal sense

heav·y-met·al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Heavy metal is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a fool or simpleton; ninny.
Collins
World English Dictionary
heavy metal
 
n
1.  a.  a type of rock music characterized by a strong beat and amplified instrumental effects, sometimes with violent, nihilistic, or misogynistic lyrics
 b.  (as modifier): a heavy-metal band
2.  a metal with a high specific gravity
3.  military large guns or shot

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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FOLDOC
Computing Dictionary

heavy metal definition


big iron

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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