- 1(British English also rucksack) a large bag, often supported on a light metal frame, carried on the back and used especially by people who go climbing or walking She swung her backpack over her shoulder. He was wearing a heavy backpack. Oxford Collocations Dictionary adjectiveleather, bulging, loaded, … verb + backpackgrab, shoulder, drop, … See full entry See related entries: Camping
- 2a piece of equipment that is carried on the back a weed-sprayer backpack In the study, birds were fitted with a 28g backpack radio transmitter.
Check pronunciation: backpack
