Back issue celebrity holds close to her window (9)
I believe the answer is:
timeframe
'her window' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'back issue celebrity holds close' is the wordplay.
'back' is a reversal indicator.
'issue' becomes 'emit' (both can mean to give out or radiate).
'celebrity' becomes 'fame' (celebrity can mean the quality of being famous).
'holds' indicates putting letters inside.
'close' becomes 'r' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'emit' in reverse letter order is 'time'.
'fame' placed around 'r' is 'frame'.
'time'+'frame'='TIMEFRAME'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for timeframe that I've seen before include "Temporal span" , "Limited period" .)