Professional indoor court (6)
I believe the answer is:
doctor
'professional' is the definition.
(I know that doctor is a type of health professional)
'indoor court' is the wordplay.
I cannot quite see how this works, but
'court' could be 'ct' (abbreviation used in road names) and 'ct' is found within the answer.
The remaining letters 'door' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for doctor that I've seen before include "Eg, surgeon" , "bones" , "Licensed medical practitioner" , "Physician" , "Who, for example" .)