Criticised joint editor (7)

I believe the answer is:

roasted

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'criticised' is the definition.
Although both the answer and definition are past participle verbs, I can't understand how they can define each other.

'joint editor' is the wordplay.
'joint' becomes 'roast' (synonyms).
'editor' becomes 'ed'.
'roast'+'ed'='ROASTED'

Can you help me to learn more?

(Other definitions for roasted that I've seen before include "Cooked hot food" , "Severely reprimanded" , "Cooked (turkey?)" , "Cooked (like a joint)" , "Oven-cooked" .)

I've seen this clue in The Mirror.

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