Some legal advisers party (4)
I believe the answer is:
gala
'party' is the definition.
(I know that party can be written as gala)
'some legal advisers' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'GALA' is hidden in the letters of 'legal advisers'.
(Other definitions for gala that I've seen before include "Festival" , "Social occasion with special performances" , "Public party" , "Special performance" , "Special festivity" .)