Journey east is rubbish (5)
I believe the answer is:
tripe
'is rubbish' is the definition.
(both can mean nonsense)
'journey east' is the wordplay.
'journey' becomes 'trip' (trip is a kind of journey).
'east' becomes 'e' (abbreviation).
'trip'+'e'='TRIPE'
(Other definitions for tripe that I've seen before include "Rot" , "Junk; food" , "Rubbish, nonsense" , "Edible nonsense?" , "Lining of the stomach of a cow as food" .)