un ‧ pack /ʌnˈpæk/ BrE AmE verb
[ Word Family: noun : ↑ pack , ↑ package , ↑ packaging , ↑ packet , ↑ packing , ↑ packer ; verb : ↑ pack ≠ ↑ unpack , ↑ package ; adjective : ↑ packed ]
1 . [intransitive and transitive] to take everything out of a box, bag, ↑ suitcase etc:
I haven’t had a chance to unpack yet.
She unpacked her suitcase and headed for the beach.
Maggie carefully unpacked the gifts she had bought.
2 . [transitive] to make an idea or problem easier to understand by considering all the parts of it separately:
Some of the issues surrounding mental illness have been unpacked in Chapter 3.