Crossword Genius

Hardened group (3)

Ross

I believe the answer is:

set

This clue is a double definition.

'hardened' is the first definition.
(synonyms)

'group' is the second definition.
(both can mean a collection)

(Other definitions for set that I've seen before include "Arrange; a party" , "group usually found together" , "Where they're filming" , "declined" , "Harden; fixed; group" .)

I've seen this clue in The Times.
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