Circus school in trendy capital (10)
I believe the answer is:
hippodrome
'circus' is the definition.
(I know that Hippodrome is a circus)
'school in trendy capital' is the wordplay.
I cannot quite understand how this works, but
'school' could be 'pod' (term for a group of marine mammals) and 'pod' is located in the answer.
'in' could be 'hip' (both can mean fashionable) and 'hip' is found within the answer.
'capital' could be 'rome' (capital of Italy) and 'rome' is found within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for hippodrome that I've seen before include "Stadium for horse shows or horse races" , "Theatre or concert hall - ancient chariot-racing course" , "Ancient Greek course" , "Circus" , "Theatre (originally for horse racing)" .)