- backpack⇄backpack, noun, verb.
- backpack⇄noun backpacker.
- backpack⇄noun 1. something made for carrying as a pack on one's back.
Ex. a backpack parachute.
2. anything carried as a pack on one's back.
Ex. Three were skin divers with backpacks of scuba gear (Time). - backpack⇄v.t., v.i. to carry a backpack or inside a backpack.
Ex. The three men carried all they had on their backs ... , quite a lot to backpack at such heights (Maclean's).