noun Etymology: Low German knappsack or Dutch knapzak, from Low German & Dutch knappen to make a snapping noise, eat + Low German sack or Dutch zak sack Date: 1603 a bag (as of canvas or nylon) strapped on the back and used for carrying supplies or personal belongings, ~ed adjective
KNAPSACK
Meaning of KNAPSACK in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012