Crossword Genius

Mean to temper disc of steel (5-6)

Ross

I believe the answer is:

close-fisted

'mean' is the definition.

'to temper disc of steel' is the wordplay.
'to temper' is an anagram indicator (temper can mean to modify).
'disc'+'of'+'steel'='discofsteel'
'discofsteel' is an anagram of 'CLOSE-FISTED'.

(Other definitions for close-fisted that I've seen before include "Stingy" , "Covetous" .)

I've seen this clue in The Guardian.
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