Surrealist painter (4)
I believe the answer is:
dali
'surrealist painter' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for dali that I've seen before include "Surrealist Spanish painter, d. 1989" , "Salvador --, twentieth century Spanish surrealist painter" , "Salvador . . . . was great Spanish surrealist painter" , "Controversial painter" , "Salvador -, twentieth century artist" .)