Another name for a return voyage (5)
I believe the answer is:
alias
'another name' is the definition.
(I've seen this before)
'a return voyage' is the wordplay.
'return' says the letters should be written backwards.
'voyage' becomes 'sail' (synonyms).
'sail' back-to-front is 'lias'.
'a'+'lias'='ALIAS'
'for' is the link.
(Other definitions for alias that I've seen before include "Assumed identity" , "Otherwise - an assumed name" , "Cabbage salad" , "Alternative name" , "aka" .)