Sportsperson physically flexible and cold at the top (7)
I believe the answer is:
climber
'sportsperson physically' is the definition.
I can't tell whether this definition defines the answer.
'flexible and cold at the top' is the wordplay.
'flexible' becomes 'limber' (similar in meaning).
'and' means one lot of letters go next to another.
'at the top' indicates taking the first letters.
The initial letter of 'cold' is 'c'.
'limber' after 'c' is 'CLIMBER'.
Can you help me to learn more?
(Other definitions for climber that I've seen before include "Bonnington" , "in the garden" , "Edward Whymper, for example" , "Mountaineer" , "Plant such as ivy" .)