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English definition of “backpack”

backpack

noun [C]  /ˈbækˌpæk/ (short form pack) us  
a bag carried on the back, usually of cloth with many pockets and straps that go over your shoulders, used to carry things

backpack

verb [I]  /ˈbæk·pæk/ us  
to walk long distances, carrying your things in a backpack: We backpacked through the Colorado Rockies last summer.
backpacker
noun [C]  /ˈbæk·pæk·ər/ us  
A line of backpackers passed us on the trail.
(Definition of backpack from the Cambridge Academic Content Dictionary © Cambridge University Press)
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