knapsack
UK: ˈnæpsæk | US: ˈnæpˌsæk
n. a small backpack or bag, typically made of sturdy material and used for carrying supplies or personal items.
The word "knapsack" originates from German Knappsack, combining knappen (to bite or snap, possibly referring to the sound of chewing or the tight closure of the bag) and Sack (bag). It entered English in the 17th century, retaining its original sense of a durable bag for carrying essentials, often used by soldiers or travelers. The "knap" element hints at practicality—a bag meant to securely "hold" items.
He packed a sandwich and a water bottle into his knapsack before the hike.
The soldier’s knapsack contained all his necessary gear.
She slung her knapsack over one shoulder and hurried to class.
The antique knapsack was made of thick leather and brass buckles.
They rummaged through the knapsack to find the missing map.