Benefit of a yashmak, we hear (5)
I believe the answer is:
avail
'benefit' is the definition.
(thesaurus)
'a yashmak we hear' is the wordplay.
'yashmak' becomes 'veil' (I've seen this before).
'we hear' indicates a 'sounds like' (homophone) clue.
'veil' is a homophone of 'vail'.
'a'+'vail'='AVAIL'
'of' acts as a link.
(Other definitions for avail that I've seen before include "Be useful" , "Use to one's advantage" , "Make use, take advantage" , "Be of value to" , "Help, benefit" .)