backpack
US /ˈbæk.pæk/
UK /ˈbæk.pæk/

1.
plecak
a bag with shoulder straps that allow it to be carried on one's back, typically made of canvas or other synthetic material and used for carrying provisions and equipment
:
•
He packed his clothes into his backpack for the trip.
Spakował ubrania do plecaka na podróż.
•
She always carries a small backpack with her essentials.
Zawsze nosi ze sobą mały plecak z niezbędnymi rzeczami.
1.
podróżować z plecakiem, wędrować z plecakiem
to hike or travel with a backpack
:
•
They plan to backpack through Europe next summer.
Planują podróżować z plecakiem po Europie przyszłego lata.
•
We decided to backpack in the mountains for a week.
Postanowiliśmy wędrować z plecakiem w górach przez tydzień.