Corsican card game (8)

I believe the answer is:

napoleon

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

'card game' is the definition.
(I know that Napoleon is a type of card game)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for napoleon that I've seen before include "Extended nap" , "French general and emperor" , "Emperor - brandy" , "In France, former sovereign" , "Corsican conqueror" .)

I've seen this clue in The Irish Independent.

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