Definition of packs:
(n) :
A bundle made up and prepared to be carried; especially, a bundle to be carried on the back, but also a load for an animal, a bale.
(n) :
A number or quantity equal to the contents of a pack
(n) :
A multitude.
(n) :
A number or quantity of connected or similar things; a collective.
(n) :
A full set of playing cards
(n) :
The assortment of playing cards used in a particular game.