Young socialite just starting (3)

I believe the answer is:

deb

I'm a little stuck... Click here to teach me more about this clue!

'young socialite' is the definition.
(debutante)

I don't understand the remainder of the clue.

(Other definitions for deb that I've seen before include "In brief, a society girl getting out of bed" , "Young woman coming out in society, in short" , "One coming out" , "Young socialite" , "Young woman making her first appearance in society, in short" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app