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' indicates the answer is hidden within 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" .)