Reserved when taken out of account (9)
I believe the answer is:
withdrawn
This could be a double definition.
'reserved' is the first definition.
(similar in meaning)
'taken out of account' is the second definition.
'withdrawn' can be an answer for 'taken' (withdrawing is a kind of taking). I'm unsure of the 'out of account' bit.
'when' is the link.
Can you help me to learn more?
(Other definitions for withdrawn that I've seen before include "Shrinking" , "scratched" , "Retired" , "Shy, reserved" , "Quiet" .)