Crossword Genius

Metal shard I moved forward (6)

Ross

I believe the answer is:

silver

'metal' is the definition.
(silver is a kind of metal)

I cannot understand how the rest of the clue works.

(Other definitions for silver that I've seen before include "Number forty-seven" , "Older regular internet user" , "Precious metal, Ag" , "Sliver of precious metal" , "Movies" .)

I've seen this clue in The Independent.
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