backpack
US /ˈbæk.pæk/
UK /ˈbæk.pæk/

1.
mochila
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.
Ele arrumou suas roupas na mochila para a viagem.
•
She always carries a small backpack with her essentials.
Ela sempre carrega uma pequena mochila com seus itens essenciais.
1.
viajar de mochila, fazer trilha com mochila
to hike or travel with a backpack
:
•
They plan to backpack through Europe next summer.
Eles planejam viajar de mochila pela Europa no próximo verão.
•
We decided to backpack in the mountains for a week.
Decidimos fazer uma viagem de mochila nas montanhas por uma semana.