(~s)
A ~ is a bag with straps that go over your shoulders, so that you can carry things on your back when you are walking or climbing.
= rucksack
N-COUNT
(~s)
A ~ is a bag with straps that go over your shoulders, so that you can carry things on your back when you are walking or climbing.
= rucksack
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012