Camelot woman some drunken idiot (4)
I believe the answer is:
enid
'camelot woman' is the definition.
(I've seen this in another clue)
'some drunken idiot' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'ENID' is hidden within 'drunken idiot'.
(Other definitions for enid that I've seen before include "Geraint's wife's" , "'... Blyton, children's author (4)'" , "& 18 Down Children's author" , "W - - Blyton" , "Writer of children's books, d. 1968" .)