Follow winding course with some cats outside (7)
I believe the answer is:
'follow winding course' is the definition.
(I've seen this before)
'with some cats outside' is the wordplay.
'with' becomes 'and'.
'some cats' becomes 'meer' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'outside' is an insertion indicator.
'and' put into 'meer' is 'MEANDER'.
Can you help me to learn more?
(Other definitions for meander that I've seen before include "Renamed (anag)" , "Zigzag" , "Wind, bend" , "roundabout route" , "Snake" .)