Notable partygoer brought back aboard oil rig tipsy (2,4)
I believe the answer is:
it girl
'notable partygoer' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'back aboard oil rig tipsy' is the wordplay.
'back' says the letters should be written backwards.
'aboard' indicates the answer is hidden within the clue (the answer is aboard or within the clue).
'lrigti' is hidden within 'oil rig tipsy'.
'lrigti' backwards is 'IT GIRL'.
'brought' acts as a link.
Can you help me to learn more?
(Other definitions for it girl that I've seen before include "Socialite" , "lass with lots of oomph" , "Highly-attractive young woman" .)