haversack
/ˈhævəsæk/noun
- a small, stout bag carried on the back or over the shoulder, used especially by soldiers and walkers（尤指军用或徒步旅行用的）背包（或挎包）。
词源
mid 18th cent.: from French havresac, from obsolete German Habersack, denoting a bag used by soldiers to carry oats as horse feed, from dialect Haber 'oats' + Sack 'sack, bag'.