Meaning of unpack

un•pack

1. to undo or remove the contents from (a box, trunk, etc.).
2. to remove (something) from a container, suitcase, etc.
3. to unburden, as the mind; reveal.
4. to decipher or discern (the meaning of symbols, statements, etc.): Each statement could be unpacked in the general theory.
5. to remove a pack or load from (a horse, vehicle, etc.).

1. to remove the contents of a container.