Felt uneasy holding cool, certain booty (3,4)

'certain booty' is the definition.
The answer and definition can be both related to property as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'felt uneasy holding cool' is the wordplay.
'uneasy' is an anagram indicator.
'holding' means one lot of letters goes inside another.
'cool' becomes 'hep' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'felt' with letters rearranged gives 'telf'.
'telf' placed around 'hep' is 'THE PELF'.

Can you help me to learn more?