Painting Somalian vagrant (4,4)
I believe the answer is:
mona lisa
'painting' is the definition.
(I've seen this before)
'somalian vagrant' is the wordplay.
'vagrant' is an anagram indicator (vagrant can mean wandering around).
'somalian' is an anagram of 'MONA LISA'.
(Other definitions for mona lisa that I've seen before include "Oil" , "Leonardo da Vinci's enigmatic portrait" , "Leonardo da Vinci's painting of enigmatic woman" , "Fertiliser from seabirds" , "depicted, in the Louvre" .)