Picture of 'wise men' feeding in East (7)
I believe the answer is:
imagine
'picture' is the definition.
(thesaurus)
'wise men feeding in east' is the wordplay.
'wise men' becomes 'magi' (I've seen this before).
'feeding' means one lot of letters goes inside another.
'east' becomes 'e' ('E' can be a synonym of 'east').
'magi' going inside 'in' is 'imagin'.
'imagin'+'e'='IMAGINE'
'of' is the link.
(Other definitions for imagine that I've seen before include "Conjure up in mind, visualise" , "A Gemini? (anag)" , "Assume" , "See something that doesn't exist" , "Fancy - dream" .)