Artist reflected in mirror images (4)
I believe the answer is:
miro
'artist' is the definition.
(I've seen this before)
'reflected in mirror images' is the wordplay.
'reflected' shows that the letters should be reversed in order.
'in' indicates a hidden word.
'orim' can be found hidden inside 'mirror images'.
'orim' backwards is 'MIRO'.
(Other definitions for miro that I've seen before include "Catalan artist" , "He painted" , "Joan -, twentieth century Spanish surrealist painter" , "Joan --, Spanish artist" .)