rucksack
US /ˈrʌk.sæk/
UK /ˈrʌk.sæk/

1.
zaino
a bag with shoulder straps that allow it to be carried on someone's back, typically made of a strong, waterproof material and used for hiking, camping, or travel.
:
•
He packed his sleeping bag and tent into his rucksack.
Ha messo il suo sacco a pelo e la tenda nel suo zaino.
•
She carried a heavy rucksack filled with climbing gear.
Portava uno zaino pesante pieno di attrezzatura da arrampicata.