Provide space expected (5)
I believe the answer is:
endue
'provide' is the definition.
(I've seen this in another clue)
'space expected' is the wordplay.
'space' becomes 'en' (in printing, a space as wide as a letter 'n').
'expected' becomes 'due' (similar in meaning).
'en'+'due'='ENDUE'
(Other definitions for endue that I've seen before include "Give (something) a particular quality (literary)" , "Endow (poetic)" , "Put on clothes" , "Make investment" , "Provide or imbue" .)