New socialite, for short (3)
I believe the answer is:
deb
'new socialite for short' 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 "Girl just entering society" , "Young woman coming out in society, in short" , "Young woman making her first appearance in society, in short" , "In brief, a society girl getting out of bed" , "One coming out" .)