Female voice range (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
alto
'female voice range' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for alto that I've seen before include "Singing range" , "Singer's hidden inside chemical toilet" , "Second of four parts (in singing)" , "Voice part" , "someone to sing" .)