Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun knapsack
1 sense of knapsack
Sense 1
backpack, back pack, knapsack, packsack, rucksack, haversack -- (a bag carried by a strap on your back or shoulder)
=> bag -- (a flexible container with a single opening; "he stuffed his laundry into a large bag")