Where the unlucky punter mopes around? (5)

I believe the answer is:
epsom
'where the unlucky punter' is the definition.
The definition suggests a singular noun which matches the answer.
'mopes around?' is the wordplay.
'around?' indicates an anagram (I've seen 'around' mean this).
'mopes' with letters rearranged gives 'EPSOM'.
Can you help me to learn more?
(Other definitions for epsom that I've seen before include "Surrey racecourse" , "Poems about the race-course" , "English town, of course?" , "Poems about English racing venue" , "The Oaks and Derby are run here" .)
