/ ˌʌnˈpæk; NAmE / verb
1.
to take things out of a suitcase, bag, etc. :
[ vn ]
I unpacked my bags as soon as I arrived.
She unpacked all the clothes she needed and left the rest in the case.
[ v ]
She went to her room to unpack.
OPP pack
2.
[ vn ] to separate sth into parts so that it is easier to understand :
to unpack a theory