Screen siren West (3)
I believe the answer is:
mae
'screen siren west' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mae that I've seen before include "- West, US film actress" , "- - West, life-jacket" , "-- West, C-twenty actress" , "- - West, movie vamp" , "Woman" .)