Mopes about meeting (5)

I believe the answer is:

epsom

I'm a little stuck... Click here to teach me more about this clue!

'meeting' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?

'mopes about' is the wordplay.
'about' is an anagram indicator.
'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" , "Derby race track" , "can have horses" , "Derby area" , "Derby racecourse - salts" .)

I've seen this clue in The Mirror.

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