- any metal or alloy having a specific gravity greater than 5.0
- a form of rock music characterized by very loud amplification, electronic distortion, throbbing rhythms, shouted lyrics, etc.
See heavy metal in American Heritage Dictionary 4
- A metal with a specific gravity greater than about 5.0, especially one that is poisonous, such as lead or mercury.
- Music Very loud, brash rock music, often with shouted, violent lyrics.
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