haversack
/ˈhævərˌsæk/
noun
- A small, sturdy bag worn over one shoulder or on the back, used for carrying food, supplies, or personal items, especially when hiking or traveling.
- She slung her haversack over her shoulder and headed out the door.
- The soldier carried his haversack filled with rations and a first-aid kit.
- He packed a sandwich and a water bottle in his haversack for the hike.