possible sack†[< Am.E < Sp. posibles wealth, means]West, Northwest, Hist.
a canvas or leather bag in which a person's belongings are kept.
1866  . . . setting to work, I overhauled my 'possible sack,' found a few coarse hooks, a bit of gut, and some thread.
1892  So saying, the old trapper unsheathed his shining knive, and separated the "mouffle," or overhanging upper lip of the moose, and placed it in his possible sack.
1952  (1959)  All he carried was gun, powder flask and possible sack.