Packing case (5)
I believe the answer is:
crate
'packing case' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for crate that I've seen before include "Jalopy" , "Packing-case made of wooden slats" , "Dilapidated vehicle" , "Carton; old plane" , "Old car" .)