Little puss in pool (5)

I believe the answer is:

kitty

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This might be a double definition.

'little puss' is the first definition.
'kitty' can be an answer for 'puss' (synonyms). I'm not certain of the 'little' bit.

'pool' is the second definition.
(both can mean a shared fund)

'in' is the link.

Can you help me to learn more?

(Other definitions for kitty that I've seen before include "Pool - puss" , "Pool - Katharina?" , "Perhaps a small Abyssinian" , "Communal fund" , "Young domestic pet" .)

I've seen this clue in The Irish News.

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