Climber training in balmy area (8)
I believe the answer is:
sweetpea
'climber' is the definition.
(I've seen this before)
'training in balmy area' is the wordplay.
'training' becomes 'PE' (Physical Education).
'in' indicates putting letters inside.
'balmy' becomes 'sweet' (I can't explain this - if you can you should give a lot more credence to this answer).
'area' becomes 'a' (maths abbreviation).
'sweet'+'a'='sweeta'
'pe' placed inside 'sweeta' is 'SWEETPEA'.
Can you help me to learn more?
(Other definitions for sweetpea that I've seen before include "climber" , "climbing plant" .)