Crossword Genius

Money gets sword in silvery metal material (7)

Ross

I believe the answer is:

tinfoil

'silvery metal material' is the definition.
(tinfoil is silvery)

'money gets sword' is the wordplay.
'money' becomes 'tin' (old-fashioned slang term for money).
'gets' is a charade indicator (letters next to each other).
'sword' becomes 'foil' (foil is a kind of sword).
'tin'+'foil'='TINFOIL'

'in' is the link.

(Other definitions for tinfoil that I've seen before include "Thin metallic sheets for protecting food" , "Shiny food wrapping" , "Fine metal" , "Thin metallic sheet" , "Food wrapper" .)

I've seen this clue in The Times.
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