— knapsacked , adj.
/nap"sak'/ , n.
a canvas, nylon, or leather bag for clothes, food, and other supplies, carried on the back by soldiers, hikers, etc.
[ 1595-1605; knappsack, equiv. to knapp a bite (of food) + sack SACK 1 ; cf. dial. E knap to snap up, eat greedily ]