ETYM French havresac, German habersack, sack for oats. Related to Haver, and Sack a bag.
1. A bag or case, usually of stout cloth, in which a soldier carries his rations when on a march; -- distinguished from knapsack.
2. Any large bag used for carrying clothing and supplies; SYN. duffle bag.
3. A gunner's case or bag used carry cartridges from the ammunition chest to the piece in loading.
Bag worn over the shoulder for carrying provisions.