Part of Far East (4)
I believe the answer is:
area
'part' is the definition.
(area is a kind of part)
'of far east' is the wordplay.
'of' says the answer is hidden in the clue.
'AREA' is hidden within 'far east'.
(Other definitions for area that I've seen before include "Space for a specific purpose, say picnic" , "Locality" , "part of town" , "District; plot" , "Extent of a two-dimensional surface" .)