Answer: rucksack

AnswerCrossword Clue
RUCKSACKHiker's or biker's burden
RUCKSACKBag on the back
RUCKSACKHiker's burden
RUCKSACKBoy Scout's hiking gear.
rucksacka knapsack (a bag carried on the back)
rucksackA bag with shoulder straps that allow it to be carried on someone's back, typically made of a strong, waterproof material and widely used by hikers; a backpack