Showed Island Queen (4)

I believe the answer is:

rani

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'queen' is the definition.
(thesaurus)

'showed island' is the wordplay.
'showed' becomes 'ran' (I can't justify this - if you can you should give a lot more credence to this answer).
'island' becomes 'i'.
'ran'+'i'='RANI'

Can you help me to learn more?

(Other definitions for rani that I've seen before include "Wife of a rajah" , "Hindu queen or princess" , "Indian queen" , "Member of royal family" , "Rajah's wife from Iran" .)

I've seen this clue in The Telegraph.

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