Pine for a girl (4)
I believe the answer is:
miss
I believe this clue is a double definition.
'pine for' is the first definition.
(I've seen this before)
'a girl' is the second definition.
(synonyms)
(Other definitions for miss that I've seen before include "Single girl" , "Fail to meet - girl" , "maiden" , "Teacher" , "state" .)