Crossword Genius

Belt commandos hard (4)

Ross

I believe the answer is:

sash

'belt' is the definition.
(thesaurus)

'commandos hard' is the wordplay.
'commandos' becomes 'sas' (Special Air Service).
'hard' becomes 'h'.
'sas'+'h'='SASH'

(Other definitions for sash that I've seen before include "Girdle" , "Baldrick" , "Waistband - type of window" , "Decorative band" , "Decoration for the twelfth" .)

I've seen this clue in The Independent.
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