Alda or Arkin (4)
I believe the answer is:
alan
This clue is a double definition.
'alda' is the first definition.
(I've seen this in another clue)
'arkin' is the second definition.
(I've seen this in another clue)
(Other definitions for alan that I've seen before include "-- Sugar, British entrepreneur" , "Sir -- Sugar (The Apprentice)" , "- Bennett, English actor, dramatist, writer" , "English historian/poet" , "A.A. Milne's first name" .)