Abstracts underwear (6)
I believe the answer is:
briefs
I believe this clue is a double definition.
'abstracts' is the first definition.
(brief is a kind of abstract)
'underwear' is the second definition.
(I've seen this before)
(Other definitions for briefs that I've seen before include "Pants" , "Supplies dope" , "Sets of instructions for lawyers" , "Underpants for lawyers?" , "Underpants, knickers" .)