Permit some galena blemish to be removed? (6)

I believe the answer is:

enable

I'm a little stuck... Click here to teach me more about this clue!

'permit' is the definition.
(I've seen this in another clue)

'some galena blemish to be removed?' is the wordplay.
'ENABLE' is hidden in amongst the letters.
But, I am uncertain how this is indicated.

Can you help me to learn more?

(Other definitions for enable that I've seen before include "Make possible, give the means to do something" , "Render capable" , "Permit or facilitate" , "Capacitate" , "Allow" .)

I've seen this clue in the Sydney Morning Herald.

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