Fancy: 'Prussia' contains name of another country (6)

I believe the answer is:

cyprus

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

'name of another country' is the definition.
'Cyprus' can be an answer for 'country' (Cyprus is an example). I'm not sure about the 'name of another' bit.

'fancy prussia contains' is the wordplay.
'contains' indicates a hidden word.
'CYPRUS' is hidden in the letters of 'fancy prussia'.

Can you help me to learn more?

(Other definitions for cyprus that I've seen before include "Mediterranean country, capital Nicosia" , "Aphrodite's island" , "Mediterranean island country" , "European island country" , "Divided Med. island" .)

I've seen this clue in The Everyman puzzle in The Observer.

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