Star sent back in luggage van (4)
I believe the answer is:
vega
'star' is the definition.
(star in the constellation Lyra)
'sent back in luggage van' is the wordplay.
'sent back' says the letters should be written backwards.
'in' indicates a hidden word.
'agev' can be found hidden inside 'luggage van'.
'agev' backwards is 'VEGA'.
(Other definitions for vega that I've seen before include "heavenly body" , "Fifth brightest star" , "Gave turn to a star" , "First magnitude star" , "Star in Lyra; grassy plain (Spanish)" .)