Cabinet selectively calm IRA hotheads (7)

I believe the answer is:

almirah

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'cabinet' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I don't see?

'selectively calm ira hotheads' is the wordplay.
'ALMIRAH' is hidden in amongst the letters.
However, I am unsure how the hidden word is indicated.

Can you help me to learn more?

I've seen this clue in The Guardian.

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