Rick, resident originally in a warmer country (6)
I believe the answer is:
sprain
'rick' is the definition.
(I know that rick can be written as sprain)
'resident originally in a warmer country' is the wordplay.
'originally' suggests taking the first letters.
'in' is an insertion indicator.
'a warmer country' becomes 'Spain' (Spain is a hot country).
The initial letter of 'resident' is 'r'.
'r' put within 'spain' is 'SPRAIN'.
(Other definitions for sprain that I've seen before include "Turn" , "Wrench (an ankle) 6)" , "Minor muscular injury" , "Twist ligament(s)" , "Pulled muscle" .)