Throw away travel game (5)
I believe the answer is:
bingo
'game' is the definition.
(bingo is a game)
'throw away travel' is the wordplay.
'throw away' becomes 'bin' (put something in a bin).
'travel' becomes 'go' (synonyms).
'bin'+'go'='BINGO'
(Other definitions for bingo that I've seen before include "Voila!" , "Number-calling game" , "Game of chance" , "Number game" , "I've completed my card!" .)