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packrack
a metal structure attached to the roof of a motor vehicle used to carry either excess luggage or items too large to fit in the car or the boot: In Victoria you would say:'Any cases that won't fit in the boot will fit in the packrack.' In NSW the term is roofrack.
Contributor's comments: Packrack was common usage in South Australia to describe what is a roofrack in NSW.
Contributor's comments: I am Victorian; everyone I know says 'roofrack', I have never heard the term 'packrack' before.