Apprentice saving money for accommodation (4)
I believe the answer is:
rent
'money for accommodation' is the definition.
'apprentice saving' is the wordplay.
'saving' indicates a hidden word.
'RENT' can be found hidden inside 'apprentice'.
(Other definitions for rent that I've seen before include "Payment due to landlord" , "breach" , "Payment - in pieces" , "Payment for use of house" , "Let out - torn" .)