Crossword Genius

For sure it's made of iron (7)

Ross

I believe the answer is:

ferrous

'iron' is the definition.
(I've seen this before)

'for sure it's made' is the wordplay.
'it's made' indicates anagramming the letters.
'for'+'sure'='forsure'
'forsure' anagrammed gives 'FERROUS'.

'of' is the link.

(Another definition for ferrous that I've seen is " Containing iron".)

I've seen this clue in The Globe and Mail.
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