Man maybe seduced with no protection from doctor (4)

I believe the answer is:

isle

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'man maybe' is the definition.
(Isle of Man)

I don't understand the remainder of the clue.

(Other definitions for isle that I've seen before include "Capri or Man, perhaps?" , "eg Thanet" , "Small mass of land in the sea" , "Anglesey, say" , "inch, perhaps" .)

I've seen this clue in The Independent.

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