Artist Picasso (5)
I believe the answer is:
pablo
'artist picasso' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pablo that I've seen before include "----- Casals, cellist" , "--- Casals, Picasso" , "Senor Picasso" , "man of La Mancha?" , "-- Picasso, Spanish artist" .)