Where jockeys can change coats (5)
I believe the answer is:
ascot
'where jockeys' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'change coats' is the wordplay.
'change' indicates an anagram.
'coats' anagrammed gives 'ASCOT'.
'can' is the link.
Can you help me to learn more?
(Other definitions for ascot that I've seen before include "Tie or cravat" , "Tie round the neck" , "where some of our betters may be" , "Horse-racing venue" , "Berkshire town, famous for horse racing" .)