Run out cricketer, one in a cricket club? Very agile (9)
I believe the answer is:
acrobatic
'very agile' is the definition.
'run out cricketer one in a cricket club?' is the wordplay.
'run out' becomes 'ro' (cricket abbreviation).
'cricketer' becomes 'bat' (I've seen this before).
'one' becomes 'i' (Roman numeral).
'in' means one lot of letters goes inside another.
'cricket club?' becomes 'cc'.
'ro'+'bat'+'i'='robati'
'a'+'cc'='acc'
'robati' placed into 'acc' is 'ACROBATIC'.
(Other definitions for acrobatic that I've seen before include "circus performer?" , "Like a spectacular gymnast" , "Performing spectacular gymnastic feats" , "Showing agility" , "Like a gymnastic entertainer" .)