Heavy metal - it could be symbolised by the introduction of Whitesnake (8)

I believe the answer is:

tungsten

I'm a little stuck... Click here to teach me more about this clue!

'heavy metal' is the definition.
'tungsten' can be an answer for 'metal' (I've seen this before). I am not sure about the 'heavy' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for tungsten that I've seen before include "Element used in steels" , "Lamp filament metal" , "Light-filament element" , "Element used in electric light filaments" , "Metallic element in a strangely snug tent" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.