Large crossword needed for journey in this? (5)
I believe the answer is:
jumbo
I believe this is a double definition.
'large crossword' is the first definition.
(I know that jumbo is a type of large crossword)
'journey in this?' is the second definition.
(as in a jumbo jet)
'needed for' acts as a link.
(Other definitions for jumbo that I've seen before include "Big jet" , "great" , "Enormous" , "Elephant - large aircraft" , "Huge jet" .)