Force in iron club (9)

I believe the answer is:

pressgang

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'club' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'force in iron' is the wordplay.
'force' becomes 'press' (both can mean to coerce).
'in iron' becomes 'gang' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'press'+'gang'='PRESSGANG'

Can you help me to learn more?

(Another definition for pressgang that I've seen is " Forcible recruiting agents".)

I've seen this clue in The Times.

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