Passage for star one's raised (5)
I believe the answer is:
sinus
'passage' is the definition.
(sinus is a kind of passage)
'star one's raised' is the wordplay.
'star' becomes 'sun' (Sun is an example).
'one's' becomes 'is' (roman numeral**).
'raised' says the letters should be written backwards.
'sun'+'is'='sunis'
'sunis' backwards is 'SINUS'.
'for' is the link.
(Other definitions for sinus that I've seen before include "Anatomical cavity" , "Cavity in the facial bones" , "Hollow space" , "Airspace" , "Cavity linked to nose" .)