Where, in the East, it's wrong to gamble (5)
I believe the answer is:
tibet
'where in the east' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'it's wrong to gamble' is the wordplay.
'wrong' indicates an anagram.
'to gamble' becomes 'bet' (betting is a kind of gambling).
'it' anagrammed gives 'ti'.
'ti'+'bet'='TIBET'
Can you help me to learn more?
(Other definitions for tibet that I've seen before include "woollen fabric" , "High place" , "Dalai Lama's land" , "Autonomous region of China, capital Lhasa" , "Himalayan country" .)