Coming-out girl (3)
I believe the answer is:
deb
'coming-out girl' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for deb that I've seen before include "Young woman coming out in society, in short" , "Young woman making her first appearance in society, in short" , "One coming out" , "Young socialite" , "In brief, a society girl getting out of bed" .)