Passionate about entertaining American city (7)
I believe the answer is:
houston
'city' is the definition.
(Houston is an example)
'passionate about entertaining american' is the wordplay.
I cannot quite understand how this works, but
'about' could be 'on' (as in a book 'on' a certain topic) and 'on' is found in the answer.
'american' could be 'us' (United States) and 'us' is present in the answer.
'passionate' could be 'hot' (associated in meaning) and 'hot' is found in the leftover letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for houston that I've seen before include "American place" , "Texas oil port" , "American city" , "Whitney ---, US singer" , "Texas home of NASA Mission Control" .)