back ‧ pack ‧ ing /ˈbækˌpækɪŋ/ BrE AmE noun [uncountable]
the activity of travelling for pleasure, usually without very much money, and carrying a backpack
back ‧ pack ‧ ing /ˈbækˌpækɪŋ/ BrE AmE noun [uncountable]
the activity of travelling for pleasure, usually without very much money, and carrying a backpack
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012