rucksack
Word family nounrucksackruckseat
ruck·sack /ˈrʌksæk/ ●●○ noun [countableC] especially British EnglishBrEDLO a bag used for carrying things on your back, especially by people on long walks 〔尤指长途步行用的〕背包,背囊 SYN backpack →4 See picture of 见图 BAG 1 →5 see picture at 见图 bag1 Origin rucksack (1800-1900) German “back sack”